【Posterior】 ,  【rear】 ,  【hind】 ,  【hinder】 ,  【after】 ,  【back】  are comparable when they mean behind in order of arrangement in space.

【Posterior】  is the usual technical term for whatever is situated behind and is opposed to anterior .

【Rear】 belongs especially to military usage, but has general application with reference to such things as structures and vehicles.

【Hind】 , opposed to front or fore, is used most commonly with reference to related parts and designates the member or pair which is in the 【rear】 . It has sometimes more general application.

【Hinder】  is equivalent to  【hind】  or, in nontechnical use, to  【posterior】 .

【After】 is largely confined to nautical usage and applies to whatever is abaft the midship section, or in the 【rear】 part of a vessel, or relatively near to this part.

【Back】 applies to what is thought of as behind, remote from, or inferior or subsidiary to, the main or more important part.