maneuver vs device

maneuver and device both are nouns.

Word	Noun	Adjective	Verb	Adverb
maneuver	Yes	No	Yes	No
device	Yes	No	No	No

As nouns, device is a hyponym of maneuver; that is, device is a word with a more specific, narrower meaning than maneuver:

Other hyponyms of maneuver include parking, gimmick, twist, feint, footwork, gambit, ploy, stratagem, artifice, ruse, measure, step.

maneuver (noun)	device (noun)
a move made to gain a tactical end	any clever maneuver
an action aimed at evading an opponent	an instrumentality invented for a particular purpose
a military training exercise	an emblematic design (especially in heraldry)
a deliberate coordinated movement requiring dexterity and skill	any ornamental pattern or design (as in embroidery)
a plan for attaining a particular goal	something in an artistic work designed to achieve a particular effect

maneuver (verb)	device (verb)
perform a movement in military or naval tactics in order to secure an advantage in attack or defense
direct the course; determine the direction of travelling
act in order to achieve a certain goal