General Rule: If a verb ends in two consonants, simply add -ion to change it to a noun. This lesson consists of base words ending in -ct and -ss.   When -ion is added, the word meanings change to "the act or result of" whatever the base word means.  For example:

SUBTRACT - verb, to take away

SUBTRACTION - noun, the act or result of taking away

 

Sort base words ending in -ct under Base -ct

Sort base words ending in -ss under Base -ss

Sort words that added -ion to Base -ct words under ct + ion

Sort words that added -ion to Base -ss words under ss+ion

Categories:  Base -ct          Base - ss          ct + ion          ss + ion

subtract - subtraction - express - expression - distinct - distinction - oppress - oppresion - elect - election - possess - possession - predict - prediction - profess - profession - extinct - extinction - congress - congressional - detect - detection - confess - confession