A 7 letter word starting with c is confirm.
vocalic or voltaic.
convene also collect
A science word that is six letters ans starts with the letter c is convex.
Cash is a 4 letter word that starts with c and ends with h.
coxcomb
Chronic
chaotic
Company
CHARITY
czarism
Cantata
vocalic or voltaic.
Cryptic
compass
success
Cabanas, Cablets, cackles
citedal