story, storey.
strand (shore), strand (fibre).
strain (v. and s.), strain (a breed).
strait (narrow), straight (upright).
stroke (a blow), stroke (fondle).
stoup, stoop.
shed (scatter), shed (shelter).
tart (adj.), tart (a pie).
tyre (of wheel), tire (fatigue), tire (attire), + tier (who ties).
time, thyme.