I passed on my second attempt.
I made the payment in two installments.
The teacher repeated the same explanation twice.
This is my second date with her.
二回 and 二度 both mean 'twice', but 二度 is preferred in set phrases and more abstract or emphatic contexts (e.g. 二度と), while 二回 is the neutral choice for counting concrete occurrences.
一回 means 'once' and 二回 means 'twice'; they sit on the same counting scale for occurrences rather than being true opposites.
second-year college student; sophomore
Standard kanji spelling for 'twice' or 'two times'.
Numerical spelling, common in informal writing or when space is limited.
Compound of 二 (two) and 回 (counter for occurrences).