keel vs flying bird

keel and flying bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
keel	Yes	No	Yes	No
flying bird	Yes	No	No	No

keel (noun)	flying bird (noun)
one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability	birds having keeled breastbones for attachment of flight muscles
the median ridge on the breastbone of birds that fly
a projection or ridge that suggests a keel

keel (verb)	flying bird (verb)
walk as if unable to control one's movements