Heads or Tails

[nijk]

heads or tails

testa o croce (head or cross)

[Rí.na.dTeangacha]

heads or tails

testa o croce (head or cross)
cara ou coroa (face or crown)

ceann nó cláirseach (head or harp)

[Dormouse559]

Adding French. The term for "tails", pile, doesn't lend itself to a direct translation, but I made an attempt. Based on the Académie Française dictionary, it emerged in the 12th century, possibly as an extension of pile, which also is traced back to the 12th century and at the time meant "monument". But over time, pile's architectural sense has shifted into "column" or "(bridge) pier", as well as "stack" (but looking at Wikipedia, there are also these tower-like funerary monuments currently called piles, and they date from as early as the first century?), so it's all very confusing.

heads or tails

pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

ceann nó cláirseach (head or harp)

[Linguaphile]

heads or tails

cara o cruz (face or cross) (Spain but also the most generic, understood throughout the Spanish-speaking world)
cara o sello (face or seal)
cara o escudo (face or shield)
cara o ceca (face or mint)
águila o sol (eagle or sun)
cara o corona (face or crown)

pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

ceann nó cláirseach (head or harp)

kull või kiri (eagle or writing)

[h34]

heads or tails
Kopf oder Zahl (head or number)

cara o cruz (face or cross) (Spain but also the most generic, understood throughout the Spanish-speaking world)
cara o sello (face or seal)
cara o escudo (face or shield)
cara o ceca (face or mint)
águila o sol (eagle or sun)
cara o corona (face or crown)

pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

ceann nó cláirseach (head or harp)

kull või kiri (eagle or writing)

[Multiturquoise]

heads or tails
Kopf oder Zahl (head or number)

cara o cruz (face or cross) (Spain but also the most generic, understood throughout the Spanish-speaking world)
cara o sello (face or seal)
cara o escudo (face or shield)
cara o ceca (face or mint)
águila o sol (eagle or sun)
cara o corona (face or crown)

pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

ceann nó cláirseach (head or harp)

kull või kiri (eagle or writing)

yazı veya tura (writing or head)

[Minuit]

heads or tails
Kopf oder Zahl (head or number)

cara o cruz (face or cross) (Spain but also the most generic, understood throughout the Spanish-speaking world)
cara o sello (face or seal)
cara o escudo (face or shield)
cara o ceca (face or mint)
águila o sol (eagle or sun)
cara o corona (face or crown)

pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

panna nebo orel (hlava nebo orel) (virgin (maiden) or eagle (head or eagle))

ceann nó cláirseach (head or harp)

kull või kiri (eagle or writing)

yazı veya tura (writing or head)

[linguoboy]

Adding Catalan, Korean, Welsh.

heads or tails
Kopf oder Zahl (head or number)

a cara o creu (on face or cross)
cara o cruz (face or cross) (Spain but also the most generic, understood throughout the Spanish-speaking world)
cara o sello (face or seal)
cara o escudo (face or shield)
cara o ceca (face or mint)
águila o sol (eagle or sun)
cara o corona (face or crown)
pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

panna nebo orel (hlava nebo orel) (virgin (maiden) or eagle (head or eagle))

tu blaen ynteu tu chwith? (front or left?), (Southwest Wales) gwlybyn ynte sychyn? (wet one or dry one?) [When there wasn't a coin available, children would instead spit on one side of a flat pebble, thus creating a "wet side".]
ceann nó cláirseach (head or harp)

kull või kiri (eagle or writing)

yazı veya tura (writing or head)

앞이야 뒤야 /aph.iya dwi.ya/ (either front or back) [The ending is verbal and so varies according to politeness level; this is "plain style".]

[md0]

+el (and I do wonder what coin was the inspiration for it)

heads or tails
Kopf oder Zahl (head or number)

a cara o creu (on face or cross)
cara o cruz (face or cross) (Spain but also the most generic, understood throughout the Spanish-speaking world)
cara o sello (face or seal)
cara o escudo (face or shield)
cara o ceca (face or mint)
águila o sol (eagle or sun)
cara o corona (face or crown)
pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

κορόνα ή γράμματα (crown or letters)

panna nebo orel (hlava nebo orel) (virgin (maiden) or eagle (head or eagle))

tu blaen ynteu tu chwith? (front or left?), (Southwest Wales) gwlybyn ynte sychyn? (wet one or dry one?) [When there wasn't a coin available, children would instead spit on one side of a flat pebble, thus creating a "wet side".]
ceann nó cláirseach (head or harp)

kull või kiri (eagle or writing)

yazı veya tura (writing or head)

앞이야 뒤야 /aph.iya dwi.ya/ (either front or back) [The ending is verbal and so varies according to politeness level; this is "plain style".]

[Liggliluff]

+Swedish

heads or tails
Kopf oder Zahl (head or number)
krona eller klave (crown or cleave/yoke(?)) (krona crown is referring to the bearer of the crown: the king, and the side of the 1, 2, 10 coin featuring his head, and the side of the 5 coin featuring his initials topped by a crown. klave cleave/yoke(?) is referring to the other side of the coin, featuring the value/number and Three Crowns, the national emblem)

a cara o creu (on face or cross)
cara o cruz (face or cross) (Spain but also the most generic, understood throughout the Spanish-speaking world)
cara o sello (face or seal)
cara o escudo (face or shield)
cara o ceca (face or mint)
águila o sol (eagle or sun)
cara o corona (face or crown)
pile ou face (monument or face)
testa o croce (head or cross)
cara ou coroa (face or crown)

κορόνα ή γράμματα (crown or letters)

panna nebo orel (hlava nebo orel) (virgin (maiden) or eagle (head or eagle))

tu blaen ynteu tu chwith? (front or left?), (Southwest Wales) gwlybyn ynte sychyn? (wet one or dry one?) [When there wasn't a coin available, children would instead spit on one side of a flat pebble, thus creating a "wet side".]
ceann nó cláirseach (head or harp)

kull või kiri (eagle or writing)

yazı veya tura (writing or head)

앞이야 뒤야 /aph.iya dwi.ya/ (either front or back) [The ending is verbal and so varies according to politeness level; this is "plain style".][/quote]