pyridoxine vs B complex

pyridoxine and B complex both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyridoxine	Yes	No	No	No
B complex	Yes	No	No	No

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

pyridoxine: a B vitamin that is essential for metabolism of amino acids and starch
B complex: originally thought to be a single vitamin but now separated into several B vitamins

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

pyridoxine (noun)	B complex (noun)
a B vitamin that is essential for metabolism of amino acids and starch	originally thought to be a single vitamin but now separated into several B vitamins