footstep vs pace

footstep and pace both are nouns.

Word	Noun	Adjective	Verb	Adverb
footstep	Yes	No	No	No
pace	Yes	No	Yes	No

As nouns, footstep and pace are synonyms defined as:

Other synonyms of footstep include step, stride.

footstep (noun)	pace (noun)
the act of taking a step in walking	a step in walking or running
the sound of a step of someone walking	the relative speed of progress or change
the distance covered by a step	a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride
	the distance covered by a step
	the rate of moving (especially walking or running)
	the rate of some repeating event