Nouns		Verbs; phrasal verbs
groundwater		degrade
household		deposit
residue		penetrate
sewage		seep through
suffocation		spell
threat		suspend
Adjectives		Adverbs
carcinogenic		subsequently
marine
nearby
vast
Word combinations
aerobic algae		reproductive failure
acute poisoning		terrestrial life
aquatic life		typhoid fever
get dissolved		water body
primary cause