Yes, the word "cock," meaning a male bird, especially a rooster, is a four-letter word with two c's in it.
Ther's lots cook fade flow flux fuse heat thaw warm
tutu, guru, unum
prig
eels
Two options are tarp and tart.
Two such words are hero and zero.
Envy Is A 4-Letter Word
Salt is a 4 letter word for seasoning.
4 letter word for drum is "Dhol".
4 letter word for final
Two options:HadjHajj
this