is a specific kind of: comprehensibility, understandability.

is a broader term that covers: monosemy | focus | clearcutness, preciseness | perspicuity, perspicuousness, plainness | unambiguity, unequivocalness | explicitness.

is an attribute of: clear | unclear.

is the opposite of: abstruseness, obscureness, obscurity, reconditeness | unclearness.

derivation: clear, clear up, crystalise, crystalize, crystallise, crystallize, elucidate, enlighten, illuminate, shed light on, sort out, straighten out | clarify, clear up, elucidate | crystal clear, limpid, lucid, luculent, pellucid, perspicuous | clear | clear, well-defined | clear, percipient | clean-cut, clear, clear-cut | absolved, clear, cleared, exculpated, exonerated, vindicated | clear, decipherable, readable.