Necessity of flywheel energy storage motor

Hi, What exactly does the expression "bear/bare necessity" mean? I know that a necessity is something that is needed. Does the expression "bare/bear necessity" mean that …

Reading was a need for him, almost a necessity. Please, what''s the subtle difference between "need" and "necessity"? It looks the same to me.

In the sentence, there is a need/necessity to improve moral education, are need and necessity both ok? The dictionary give very similar definition. I cannot tell them apart …

That''s why obligation implies necessity (but not the other way around): because every obligation is a (type of) necessity, but not every necessity is an obligation. That is, not …

No necessity of making a living away from home results in neglect of children, and no father is confronted with his inability to ''buy'' an education for his child.

I am not sure that this sentece is grammatically correct because i am not sure that i can say the necessity to (is it the necessity/need FOR someone TO ...). Thnaks for your help …

A necessity for sailing the ocean is a sound boat. Once you have the boat, you may have a need for a crew or a motor, but neither are strictly necessary to sail the ocean.

I have the understanding that "necessity" can be followed by those three prepositions depending on the context, could you explain the difference to me and when …

Hello. Should I say "a necessity to do something" or "a necessity for doing something"? Or is there a difference or are both correct? Thank you.

I would say that necessity of is to be preferred to necessity for in formal language. I would usually say necessity of but need for.