plant material vs shuck

plant material and shuck both are nouns.

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

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

plant material: material derived from plants
shuck: material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds

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

plant material (noun)	shuck (noun)
material derived from plants	material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds

plant material (verb)	shuck (verb)
	remove the shucks from
	remove from the shell