canal vs astronomy

canal and astronomy both are nouns.

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

canal (noun)	astronomy (noun)
long and narrow strip of water made for boats or for irrigation	the branch of physics that studies celestial bodies and the universe as a whole
a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
(astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion

canal (verb)	astronomy (verb)
provide (a city) with a canal