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.
Despite their lower upfront costs, electric furnaces come with some of the highest operating costs of any central heating system. Plan to spend $35.76 per million British thermal units of heat energy generated using an electric furnace, according to the U.S. Energy Information Administration.A typical home in a mild climate zone may need around 50 million Btu per year, for an annual heating cost of $1,788 using an electric furnace. March 2013 article on NewsTribune.com estimates that an air-source heat pump costs $2,000 to $7,500 installed, and these units cost as little as one-fourth as much to operate as traditional heating systems, according to the DOE.