arcsin vs inverse sine

arcsin and inverse sine both are nouns.

Word	Noun	Adjective	Verb	Adverb
arcsin	Yes	No	No	No
inverse sine	Yes	No	No	No

As nouns, arcsin and inverse sine are synonyms defined as:

arcsin and inverse sine: the inverse function of the sine; the angle that has a sine equal to a given number

Other synonyms of arcsin include arc sine, arcsine.

arcsin (noun)	inverse sine (noun)
the inverse function of the sine; the angle that has a sine equal to a given number	the inverse function of the sine; the angle that has a sine equal to a given number