biology vs compressed

biology is a noun but compressed is not a noun.

Word	Noun	Adjective	Verb	Adverb
biology	Yes	No	No	No
compressed	No	Yes	No	No

biology (noun)	compressed (noun)
the science that studies living organisms
all the plant and animal life of a particular region
characteristic life processes and phenomena of living organisms

biology (adjective)	compressed (adjective)
	pressed tightly together
	reduced in volume by pressure
	flattened laterally along the whole length (e.g., certain leafstalks or flatfishes)