chicken vs cowardly

chicken is a noun but cowardly is not a noun.

Word	Noun	Adjective	Verb	Adverb
chicken	Yes	Yes	No	No
cowardly	No	Yes	No	No

chicken (noun)	cowardly (noun)
a domestic fowl bred for flesh or eggs; believed to have been developed from the red jungle fowl
a foolhardy competition; a dangerous activity that is continued until one competitor becomes afraid and stops
the flesh of a chicken used for food
a person who lacks confidence, is irresolute and wishy-washy

chicken (adjective)	cowardly (adjective)
easily frightened	lacking courage; ignobly timid and faint-hearted