Form nouns from these verbs and adjectives: Compete, to dump, to organize, to buy, to achieve, dark. Form adjectives from these nouns : Water, ecology, person, sleep, environment, power

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.