Assistance rhymes with:
consistence, insistence, persistence, self-subsistence, subsistence, coexistence, consistence, distance, existence, insistence, outdistance, persistence, resistance, resistence, self-subsistence, subsistence
Assistance sounds like:
academic, academics, academies, academy's, acceding, accosting, accusations, acquisition's, acquisitions, acquitting, acting, actinomycosis, action's, actions, acuteness, agitating, ashton's, assisting, associating, association's, associations, astonish, astuteness, auction's, auctioning, auctions, augustinians, augustyniak, austen's, austin's