kowtow vs truckle

kowtow and truckle both are nouns.

Word	Noun	Adjective	Verb	Adverb
kowtow	Yes	No	Yes	No
truckle	Yes	No	Yes	No

As verbs, kowtow and truckle are synonyms defined as:

Other synonyms of kowtow include bootlick, fawn, kotow, suck up, toady.

kowtow (noun)	truckle (noun)
a former Chinese custom of touching the ground with the forehead as a sign of respect or submission	a low bed to be slid under a higher bed

kowtow (verb)	truckle (verb)
try to gain favor by cringing or flattering	try to gain favor by cringing or flattering
bend the knees and bow in a servile manner	yield to out of weakness