Meaning : Amount or degree or range to which something extends.
Example :
The wire has an extension of 50 feet.
Synonyms : extension, prolongation
Meaning : The consequence of being lengthened in duration.
Synonyms : continuation, prolongation, protraction
Lengthiness ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Lengthiness ka matlab kya hota hai?