albumen vs lactalbumin

albumen and lactalbumin both are nouns.

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

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

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

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

albumen (noun)	lactalbumin (noun)
the white part of an egg; the nutritive and protective gelatinous substance surrounding the yolk consisting mainly of albumin dissolved in water	albumin occurring in milk
a simple water-soluble protein found in many animal tissues and liquids