What are similarities of wind energy and fossil fuel?

Answer 1

Both can be used to generate electricity - but there the similarity ends.

Wind power can be used pretty much directly. The turbine is connected to an alternator via a gearbox, and away we go. More or less. And only when the wind is blowing within a fairly narrow, optimum speed range.

"Free" and non-polluting though individual machines produce very modest power outputs, in the scheme of things- and if you ignore the fuel used in constructing and maintaining the machine. No waste.

Fossil fuel has to be burnt in some form of heat engine coupled to the alternator. Gas or liquid fuel can be used directly in a conventional engine, or, as coal has to be, burnt in the furnace of a boiler to produce high-pressure steam that drives a turbine connected to the alternator. Constant output for days, weeks, months on end.

Expensive fuel from finite source, and pollution concerns - but very large continual power output from relatively compact plant.

Answer 2

Both wind energy and fossil fuels are sources of energy used to generate electricity. They both have environmental impacts - wind energy is renewable and cleaner with no greenhouse gas emissions during operation, while fossil fuels are non-renewable and contribute to air pollution and climate change. Additionally, both forms of energy require infrastructure for extraction, distribution, and utilization.