[leta]

Good day!
And help..............
I've come across recently several variants of how juridical documents may be titled especially those concerning different acts:
certificate, statement; deed; instrument; note; record
And I couldn’t keep track of a tendency when a pserson should use one title and when another.
For instance, if we speak of transferring some rights for something – it is called “deed of assignment”; when, say, purchase is mentioned – then it is “act of purchase”; if customs seizes some goods – it is seizure note; if it is some official law – then “legislative act” is used…..
Please, could you clarify when we should use one title and when another?
If there could not be any rule in naming the documents – are there any internet resources of such names to learn them by heart?....
Thank you!