Thank you Thee Bouyyy,
There is no purposeful reason behind this to mention a difference terms in documents, we hade a practice from long back, though this is not acceptable and there should be uniformity/similarity of writing in all documents in either anyone term. i think ,as you suggested above statement as 'There is no difference. Pvt Ltd / Private Limited / (P) Ltd are just different forms used to represent private limited company' ok for to justify the query of main. what is your opinion?