Gentian rhymes with:
apprehension, ascension, attention, comprehension, condescension, contention, convention, detention, dimension, dissension, extension, henschen, hypertension, hypotension, invention, laurentian, mention, misapprehension, pension, pretension, prevention, reinvention, retention, suspension, tension
Gentian sounds like:
gindin, gondwana, guantanamo, guindon