Mammoth Uncensored Word List:
58 words ending with ns, 4 letters long

awns bans bens bins buns cans cons dens dins dons eans eons erns fans fens fins funs gins gons guns hens hins inns ions kans kens kins kons lens lins mans mens nuns oons owns pans pens pins puns runs sins sons suns tans tens tins tons urns vans wans wens wins wons wyns yens yins zens zins