Lactaid vs disaccharidase

Lactaid and disaccharidase both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lactaid	Yes	No	No	No
disaccharidase	Yes	No	No	No

As nouns, disaccharidase is a hypernym of Lactaid; that is, disaccharidase is a word with a broader meaning than Lactaid:

Lactaid: any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
disaccharidase: an enzyme that catalyzes the hydrolysis of disaccharides into monosaccharides

Lactaid (noun)	disaccharidase (noun)
any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose	an enzyme that catalyzes the hydrolysis of disaccharides into monosaccharides