cutin vs plant material

cutin and plant material both are nouns.

Word	Noun	Adjective	Verb	Adverb
cutin	Yes	No	No	No
plant material	Yes	No	No	No

As nouns, plant material is a hypernym of cutin; that is, plant material is a word with a broader meaning than cutin:

cutin: (biochemistry) a waxy transparent material that occurs in the cuticle of plants and consists of highly polymerized esters of fatty acids
plant material: material derived from plants

Other hypernyms of cutin include plant substance.

cutin (noun)	plant material (noun)
(biochemistry) a waxy transparent material that occurs in the cuticle of plants and consists of highly polymerized esters of fatty acids	material derived from plants