In my opinion, you can use it to define words and find more suitable words (they usually have a thesaurus built into the definition), and find words that seem more elegant or mature.
Answer:
establishment of road
facility of drinking water.
are
2 examples of social development
The assumption that Japanese Americans posed a threat to national security.
The adverb is little a adjective would be especially
Answer:
It's an adpositional phrase
