albumin vs lactalbumin

albumin and lactalbumin both are nouns.

Word	Noun	Adjective	Verb	Adverb
albumin	Yes	No	No	No
lactalbumin	Yes	No	No	No

As nouns, lactalbumin is a hyponym of albumin; that is, lactalbumin is a word with a more specific, narrower meaning than albumin:

albumin: a simple water-soluble protein found in many animal tissues and liquids
lactalbumin: albumin occurring in milk

Other hyponyms of albumin include ricin, ricin toxin, serum albumin.

albumin (noun)	lactalbumin (noun)
a simple water-soluble protein found in many animal tissues and liquids	albumin occurring in milk