Merchants sold. Crafts made.
well a merchant does some basic stuff that many people need where a crafter does advance stuff that people pretty much only buy for decoration
Guilds were organizations, usually gathering together those who performed similar crafts (i.e. Painters Guild). They functioned to train apprentices and teach them the "secrets and mysteries" of...
there is no difference, they're the same thing. but craft guilds are a type of merchant guild. other than that, there is no difference, really
merchant guild would buy merch and then sell while craft guilds would sell the stuff they made i think...