Mammoth Uncensored Word List:
47 words ending with ms, 4 letters long

aims alms arms bams bums cams cwms dams dims doms elms fems fums gams gems gums gyms hams hems hims hums isms jams lams lyms mams mems moms mums nams nims ohms olms ooms pams rams rims rums soms sums tams tems tums vims vums wems yams