pearlite vs lamellar mixture

pearlite and lamellar mixture both are nouns.

Word	Noun	Adjective	Verb	Adverb
pearlite	Yes	No	No	No
lamellar mixture	Yes	No	No	No

As nouns, lamellar mixture is a hypernym of pearlite; that is, lamellar mixture is a word with a broader meaning than pearlite:

pearlite: a lamellar mixture of cementite and ferrite formed during the cooling of austenite; a constituent of steel and cast iron
lamellar mixture: a mixture in which substances occur in distinct layers

pearlite (noun)	lamellar mixture (noun)
a lamellar mixture of cementite and ferrite formed during the cooling of austenite; a constituent of steel and cast iron	a mixture in which substances occur in distinct layers