Definitions:
an essential or characteristic part of something abstract

each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. each element is distinguished by its atomic number, i.e. the number of protons in the nuclei of its atoms.

strong winds, heavy rain, or other kinds of bad weather

a part in an electric kettle, heater, or cooker which contains a wire through which an electric current is passed to provide heat.