Using a blank as the 8th letter, the longest words I can make are 7 letters: carotid, cortina, ricotta, czarist, apricot, chariot, erotica, haricot, carotin
The only 8 letter word you can get out of CESERCNT is crescent
The only 8 letter word with those letters is "poaching"
"Retraces"
Pavane ( if you want 6 letters ) or gavotte ( for 7 letters )
Scotland
You can not spell any words beginning with the letter A utilizing only the letters turoerrxcep. You also need the letter A to spell a word beginning with A.
A science word that is six letters ans starts with the letter c is convex.
Tragic
clogging
clement
talc
Scanning is one. There are way too many possibilities. Find some other letters to help narrow the field.