represent vs mock up

represent and mock up both are verbs.

Word	Noun	Adjective	Verb	Adverb
represent	No	No	Yes	No
mock up	No	No	Yes	No

As verbs, mock up is a hyponym of represent; that is, mock up is a word with a more specific, narrower meaning than represent:

represent (verb)	mock up (verb)
to establish a mapping (of mathematical elements or sets)	construct a model in the likeness of
serve as a means of expressing something
express indirectly by an image, form, or model; be a symbol
point out or draw attention to in protest or remonstrance
bring forward and present to the mind
describe or present, usually with respect to a particular quality
create an image or likeness of
play a role or part
perform (a play), especially on a stage
be a delegate or spokesperson for; represent somebody's interest or be a proxy or substitute for, as of politicians and office holders representing their constituents, or of a tenant representing other tenants in a housing dispute
be representative or typical for
be the defense counsel for someone in a trial
form or compose
be typical of
take the place of or be parallel or equivalent to