no-hit game vs no-hitter

no-hit game and no-hitter both are nouns.

Word	Noun	Adjective	Verb	Adverb
no-hit game	Yes	No	No	No
no-hitter	Yes	No	No	No

As nouns, no-hit game and no-hitter are synonyms defined as:

no-hit game and no-hitter: a game in which a pitcher allows the opposing team no hits

no-hit game (noun)	no-hitter (noun)
a game in which a pitcher allows the opposing team no hits	a game in which a pitcher allows the opposing team no hits