step vs locomotion

step and locomotion both are nouns.

Word	Noun	Adjective	Verb	Adverb
step	Yes	No	Yes	No
locomotion	Yes	No	No	No

As nouns, locomotion is a hypernym of step; that is, locomotion is a word with a broader meaning than step:

Other hypernyms of step include travel.

As nouns, locomotion is a hypernym of step; that is, locomotion is a word with a broader meaning than step:

Other hypernyms of step include travel.

step (noun)	locomotion (noun)
the act of changing location by raising the foot and setting it down	self-propelled movement
any maneuver made as part of progress toward a goal	the power or ability to move
a sequence of foot movements that make up a particular dance
support consisting of a place to rest the foot while ascending or descending a stairway
a solid block joined to the beams in which the heel of a ship's mast or capstan is fixed
a musical interval of two semitones
a mark of a foot or shoe on a surface
the sound of a step of someone walking
the distance covered by a step
a short distance
relative position in a graded series

step (verb)	locomotion (verb)
measure (distances) by pacing
move or proceed as if by steps into a new situation
place (a ship's mast) in its step
shift or move by taking a step
put down or press the foot, place the foot
walk a short distance to a specified place or in a specified manner
move with one's feet in a specific manner
furnish with steps
treat badly
cause (a computer) to execute a single command