to misunderstand / make a mistake, make an error

policy

stricture, constriction, narrowness

to become stenosed, to be affected with stenosis

search, lookup, exploration, hunt / (computer science) search

search, look up

a work, especially a work of art such as a performance, a painting, a piece of pottery, etc.

luxury / (grammar) superlative

search (rescue of a missing person etc.) / investigation (police investigation)

search (especially for a missing person or people) / investigate