This could be isolation, which more technically means set apart as an individual or group.
Kiln
The word "portable" serves as a one-word substitute for something that is light and small enough to be carried from one place to another. It conveys the idea of being easy to transport and handle.
This is a commuter.
Aquarium
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
You would probably park them at an oasis, or watering hole.
The word metalworking is one word.
eat, use
The word that works is idiot.
what word can I substitute for constitutes