cat's feet vs cat's foot

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

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

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

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

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

cat's feet (noun)	cat's foot (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