stratagem vs ploy

stratagem and ploy both are nouns.

Word	Noun	Adjective	Verb	Adverb
stratagem	Yes	No	No	No
ploy	Yes	No	No	No

As nouns, stratagem and ploy are synonyms defined as:

Other synonyms of stratagem include gambit.

stratagem (noun)	ploy (noun)
a maneuver in a game or conversation	a maneuver in a game or conversation
an elaborate or deceitful scheme contrived to deceive or evade	an opening remark intended to secure an advantage for the speaker