plant material vs cutin

plant material and cutin both are nouns.

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

As nouns, cutin is a hyponym of plant material; that is, cutin is a word with a more specific, narrower meaning than plant material:

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

Other hyponyms of plant material include chaff, husk, shuck, stalk, straw, stubble, cork, plant product, vegetable tallow, wood.

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