common
A science word that is six letters ans starts with the letter c is convex.
canola
carbon
complex
Some four letter words that start with C are:cagecakecallcamecanecan'tcarecartcastcavecellchapchewchinchipclanclapclipcomecookcoolcooncootcorecorkcorncropcrowcurecute
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern C-CC-C. That is, six letter words with 1st letter C and 3rd letter C and 4th letter C and 6th letter C. In alphabetical order, they are: coccic
Confab and Cherub
hotcake
accentacceptanchorbucklebucketcactuscicadadecalsdecreedoctorexceptescortfactorficklehockeyhiccupincomeinchesjockeyjacketkickedlocketlockermacrosmockednickelnachosorchidoccupypicklepicnicreciperecordsecondsecrettickettickleulcersunclesvictimvacuumwicketyachts
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern C-C-T-. That is, six letter words with 1st letter C and 3rd letter C and 5th letter T. In alphabetical order, they are: cecity cicuta
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern C-C--P. That is, six letter words with 1st letter C and 3rd letter C and 6th letter P. In alphabetical order, they are: cockup
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --CCIC. That is, six letter words with 3rd letter C and 4th letter C and 5th letter I and 6th letter C. In alphabetical order, they are: coccic