rhason

As nouns the difference between rhason and phason

is that rhason is the clerical garb worn in the greek and russian orthodox churches while phason is (physics) a quasiparticle existing in quasicrystals due to their specific, quasiperiodic lattice structure.

As nouns the difference between reason and rhason

is that reason is a cause: while rhason is the clerical garb worn in the greek and russian orthodox churches.

As a verb reason

is to exercise the rational faculty; to deduce inferences from premises; to perform the process of deduction or of induction; to ratiocinate; to reach conclusions by a systematic comparison of facts.