Something that is lost and then found is recovered.
The word is "classifieds" (classified ads).
There is no one-word substitute in English for "son-in-law."
The word you want is florist.
Sportsmanship is a word substitute for spirit of game
The word metalworking is one word.
The analogy of lost is to found as autumn is to spring. Both pairs involve a transition from one state to another - from being lost to being found, and from one season to another.
eat, use
The word that works is idiot.
what word can I substitute for constitutes
Elevate
Traditionalist
Deaf