Attention rhymes with:
contention, detention, extension, hypertension, hypotension, pretension, retention, tension, apprehension, ascension, comprehension, condescension, contention, convention, detention, dimension, dissension, extension, gentian, henschen, hypertension, hypotension, invention, laurentian, mention, misapprehension, pension, pretension, prevention, reinvention, retention, suspension, tension
Attention sounds like:
addendum, admonition, automation, automaton