astronomy vs accretion

astronomy and accretion both are nouns.

Word	Noun	Adjective	Verb	Adverb
astronomy	Yes	No	No	No
accretion	Yes	No	No	No

astronomy (noun)	accretion (noun)
the branch of physics that studies celestial bodies and the universe as a whole	(law) an increase in a beneficiary's share in an estate (as when a co-beneficiary dies or fails to meet some condition or rejects the inheritance)
	an increase by natural growth or addition
	(geology) an increase in land resulting from alluvial deposits or waterborne sediment
	(biology) growth by addition as by the adhesion of parts or particles
	(astronomy) the formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
	something contributing to growth or increase