vitamin H vs B complex

vitamin H and B complex both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitamin H	Yes	No	No	No
B complex	Yes	No	No	No

As nouns, B complex is a hypernym of vitamin H; that is, B complex is a word with a broader meaning than vitamin H:

vitamin H: a B vitamin that aids in body growth
B complex: originally thought to be a single vitamin but now separated into several B vitamins

Other hypernyms of vitamin H include B-complex vitamin, B, B vitamin, vitamin B, vitamin B complex.

vitamin H (noun)	B complex (noun)
a B vitamin that aids in body growth	originally thought to be a single vitamin but now separated into several B vitamins