pantothenic acid vs vitamin B

pantothenic acid and vitamin B both are nouns.

Word	Noun	Adjective	Verb	Adverb
pantothenic acid	Yes	No	No	No
vitamin B	Yes	No	No	No

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

pantothenic acid: a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods
vitamin B: originally thought to be a single vitamin but now separated into several B vitamins

Other hypernyms of pantothenic acid include acid, B-complex vitamin, B, B complex, B vitamin, vitamin B complex.

pantothenic acid (noun)	vitamin B (noun)
a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods	originally thought to be a single vitamin but now separated into several B vitamins