Learn English – Difference between “taxi” and “cab”

JoseK is correct that the meaning of emend is confined to textual alterations, and that amend can be broadened to include the general improvement of other things. Still, amend is mostly used in the sense of improving text. If you're talking about fixing a rip in a shirt, you would be better to just use the word mend; to amend the shirt would sound strange. The Constitution of the U.S. may be amended (as it has been) but if the actual document itself were damaged and required restoration I don't think anyone would say the team that did the work amended the Constitution.

Cutlery has two definitions: 1. cutting/edged implements used for serving or eating food; 2. eating utensils in general. Without further context, an American is likely to assume the first definition (knives), while a Brit is more likely to go for the generic meaning. Silverware also means eating utensils, especially silver-colored ones, though nowadays, most silverware is not actually made of silver. An American synonym that does not imply anything about the silver content (or lack thereof) is flatware.

Crockery is completely different: in British English usage, it means the things on the dinner table that are usually made of china or porcelain -- plates, bowls, saucers, cups, serving bowls, etc. In American English, crockery is used for certain earthenware cooking pots, but given enough context, an American would probably understand crockery used according to the British definition.