purl vs whirlpool

purl and whirlpool both are nouns.

Word	Noun	Adjective	Verb	Adverb
purl	Yes	No	Yes	No
whirlpool	Yes	No	Yes	No

As verbs, purl and whirlpool are synonyms defined as:

Other synonyms of purl include eddy, swirl, whirl.

purl (noun)	whirlpool (noun)
a basic knitting stitch made by putting the needle through the front of the stitch from the righthand side	a powerful circular current of water (usually the result of conflicting tides)
gold or silver wire thread

purl (verb)	whirlpool (verb)
make a murmuring sound	flow in a circular current, of liquids
embroider with gold or silver thread
edge or border with gold or silver embroidery
knit with a purl stitch
flow in a circular current, of liquids