cat's foot vs cat's feet

cat's foot and cat's feet both are nouns.

Word	Noun	Adjective	Verb	Adverb
cat's foot	Yes	No	No	No
cat's feet	Yes	No	No	No

As nouns, cat's foot and cat's feet are synonyms defined as:

cat's foot and cat's feet: low-growing perennial herb having leaves with whitish down and clusters of small white flowers

Other synonyms of cat's foot include Antennaria dioica, pussytoes.

cat's foot (noun)	cat's feet (noun)
low-growing perennial herb having leaves with whitish down and clusters of small white flowers	low-growing perennial herb having leaves with whitish down and clusters of small white flowers