is a specific kind of: dilate, elaborate, enlarge, expand, expatiate, exposit^v2, expound, flesh out, lucubrate.

is a broader term that covers: depict, describe, draw | premise.

derivation: exposition, expounding.

is a specific kind of: clarify, clear up, elucidate.

is a broader term that covers: detail | exposit^v1, expound, set forth | exemplify, illustrate, instance | particularise, particularize, specialise, specialize, specify.

is the opposite of: abbreviate, abridge, contract, cut, foreshorten, reduce, shorten.

derivation: expanding upon, expansion | amplification, elaboration | lucubration | exposition | exposition, expounding | dilation | expatiation | elaboration, enlargement, expansion | exponent | expositive, expository.