Meaning of ALTERNATIVE in English

[esp. US] alternate [noun], [adjective] - (something that is) different from something else, esp. from what is usual, and offering the possibility of choiceThere must be an alternative to people sleeping on the streets. [C]We are not going to rule out every other alternative. [C]I'm afraid I have no alternative but to ask you to leave (= that is what I have to do). [C]The opposition parties have so far failed to set out an alternative strategy. [before noun]An alternative venue for the concert is being sought. [before noun](esp. US) They ridiculed any alternate point of view. [before noun]Alternative energy means energy from moving water, wind, the sun and gas from animal waste.The new policy is aimed at developing alternative energy sources and decreasing dependence on imported energy.Alternative lifestyles/medicine/comedy are things which are considered to be unusual and which tend to have a small but enthusiastic group of people who support them.Alternative medicine includes treatments such as acupuncture, homeopathy, osteopathy and hypnotherapy.

Cambridge English vocab.      Кембриджский английский словарь.