Trim, trip.
A four letter word starting with J is jump or joke.
KnowKnotKneeKnewKeepKeptKeelKeenKelpKilnKindKite
A 4 letter word starting with A that's a color is aqua.
icon, itch, into, isle
teal
Seta is a 4-letter word for hair or bristle starting with S.
RingRangRollRats
goalgoatgodsgoesgoldgolfgonegonggoodgoongown
able
Anna
aver
Mire is a 4-letter word for bog that starts with "Mi"