A person who studies the origin of the words and its meaning is called an etymologist. Etymology is a branch of linguistics. I think all these are terms are named in English language, in every developed language there is a different term for each studies.
The wisdom of using an electric heater depends on the per kilowatt cost in your region. 1  If your heater has a 1000 watt rating and your cost of electricity is $0.15/Kwh your cost to operate for one hour would be $0.15. 2  If the element is activated 10 hours out of every 24 hours your cost per day would be $1.50.
This 1,500 watt heater running for 5 hours a day during a 30-day month will cost $22.50 at a rate of $0.10 per kilowatt hour. Check your local rates to determine actual cost per kilowatt hour. Troubleshooting. If your heater fails to work, check the thermostat to make sure the system is on.