Form nouns from these verbs and adjectives: Compete , to dump , to organize , to buy , to achieve , dark . Form adjectives

  Verb/adjective - noun:

  To compete - competition, to dump - dump, to organize - organization, to buy - buy, to achieve - achievement, dark - darkness.

  Nouns - adjectives:

  Water - water, ecology - ecological, person - personal, sleep - sleeping, environment - environmental, power - powerful.