plant process vs burl

plant process and burl both are nouns.

Word	Noun	Adjective	Verb	Adverb
plant process	Yes	No	No	No
burl	Yes	No	Yes	No

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

plant process (noun)	burl (noun)
a natural projection or outgrowth from a plant body or organ	soft lump or unevenness in a yarn; either an imperfection or created by design
	a large rounded outgrowth on the trunk or branch of a tree
	the wood cut from a tree burl or outgrowth; often used decoratively in veneer

plant process (verb)	burl (verb)
	remove the burls from cloth