biology vs propagate

biology is a noun but propagate is not a noun.

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

biology (noun)	propagate (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 (verb)	propagate (verb)
	multiply sexually or asexually
	cause to propagate, as by grafting or layering
	cause to become widely known
	transmit
	transmit or cause to broaden or spread
	become distributed or widespread
	travel through the air
	transmit from one generation to the next