maneuver vs completion

maneuver and completion both are nouns.

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

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

maneuver (noun)	completion (noun)
a move made to gain a tactical end	a concluding action
an action aimed at evading an opponent	(American football) a successful forward pass in football
a military training exercise
a deliberate coordinated movement requiring dexterity and skill
a plan for attaining a particular goal

maneuver (verb)	completion (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