truckle vs kowtow

truckle and kowtow both are nouns.

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

As verbs, truckle and kowtow are synonyms defined as:

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

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

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