THESAURUS
Comprehend
absorb, accept, admit, appreciate, apprehend, assimilate, be acquainted with, be apprised of, be aware of, be cognizant of, be conscious of, be conversant with, be informed, be with one, catch, catch on, cognize, compass, complete, comprise, conceive, conceptualize, contain, count in, cover, dig, digest, discern, embody, embrace, encircle, enclose, encompass, envisage, envision, fathom, fill, fill in, fill out, follow, get, get hold of, get the drift, get the idea, get the picture, grasp, have, have information about, have it taped, have knowledge of, hold, include, incorporate, involve, ken, know, learn, make out, master, number among, occupy, perceive, possess, prehend, read, realize, receive, reckon among, reckon in, reckon with, recognize, savvy, see, seize, seize the meaning, sense, subsume, take, take in, take into account, take into consideration, take up, twig, understand, wot, wot of
ROGET THESAURUS
Comprehend
Composition
VB
be composed of, be made of, be formed of, be made up of, consist of, be resolved into, include, contain, hold, comprehend, take in, admit, embrace, embody, involve, implicate, drag into, compose, constitute, form, make, make up, fill up, build up, enter into the composition of.
Inclusion
VB
be included in, come under, fall under, range under, belong to, pertain to, range with, merge in, include, comprise, comprehend, contain, admit, embrace, receive, inclose, embody, encircle, reckon among, enumerate among, number among, refer to, place with, arrange with, place under, take into account.
Knowledge
VB
know, ken, scan, wot, wot aware, be aware of, ween, weet, trow, have, possess, conceive, apprehend, comprehend, take, realize, understand, savvy, appreciate, fathom, make out, recognize, discern, perceive, see, get a sight-of, experience, know full well, have some knowledge of, possess some knowledge of, be au courant, have in one's head, have at one' fingers ends, know by heart, know by rote, be master of, connaitre le dessous des cartes, know what's what, see one's way, discover, come to one's knowledge.
Intelligibility
VB
be intelligible, speak for itself, speak volumes, tell its own tale, lie on the surface, render intelligible, popularize, simplify, clear up, elucidate, understand, comprehend, take, take in, catch, grasp, follow, collect, master, make out, see with half an eye, see daylight, see one's way, enter into the ideas of, come to an understanding.