noun
A movement of the foot
pace, stride, gait, footstep, footfall, tread, stepping.
One degree in a graded rise
rest, run, tread, round, rung, level.
The print of a foot
footprint, footmark, track, print, imprint, impression, footstep, trail, trace, mark; see also track 2.
An action, especially a first action
start, move, measure; see action 2.
in step (with)
in agreement with, coinciding with, similar to; see alike 1, 2, 3, similarly.
keep step
out of step
take steps
watch one's step*