Thread:User talk:CodeCat/Perfective and imperfectie forms/reply (15)

Prefixes such as u- and s- used in the verbs above can have a range of disparate meanings in their derivations such as "completing action inside something"; "moving an object away"; "separating objects"; "separating objects in a downward direction"; "finiteness"; "joining objects". The base and derived terms share the same underlying basic meaning, but they are slightly modified in derivations. For those ablaut/infix perfective/imperfective pairs this is usually not the case - they exists only in pairs (or sometimes triplets) always meaning the same thing but modified for perfectiveness of action, whereas prefixed forms can be many. сделать is really merely a derived form of делать, one of many possible.