eat, use
A compulsion to consume liquids is thirst. A compulsion to consume alcoholic beverages is alcoholism or dipsomania.
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 word that works is idiot.
what word can I substitute for constitutes
Elevate
Traditionalist
Deaf
Omnipresent
A walker is a pedestrian.