assemble /əˈsembl/
(verb) to come together as a group; to bring people or things together as a group
Example: All the students were asked to assemble in the main hall

beforehand /bɪˈfɔːrhænd/
(adverb) earlier; before something else happens or is done
Example: To speed up the mailing, we should prepare the labels beforehand

complication /ˌkɑːmplɪˈkeɪʃn/
(noun) a thing that makes a situation more complicated or difficult
Example: She will have to spend two more days in the hospital due to complications during the surgery.

courier /ˈkʊriər/
(noun) a person or company whose job is to take packages or important papers somewhere
Example: We hired a courier to deliver the package

express /ɪkˈspres/
(verb) to show or make known a feeling, an opinion, etc. by words, looks or actions
Example: It's important that this document be there tomorrow, so please send it express mail.

fold /fəʊld/
(verb) to bend something, especially paper or cloth, so that one part lies on top of another part
Example: Fold the letter into three parts before stuffing it into the envelope

layout /ˈleɪaʊt/
(noun) the way in which the parts of something such as the page of a book, a website, a garden or a building are arranged
Example: There is no single correct layout for business letters

mention /ˈmenʃn/
(verb) to write or speak about something/somebody, especially without giving much information
Example: You should mention in the letter that we can arrange for mailing the brochures as well as printing them

petition /pəˈtɪʃn/
(noun) a written document signed by a large number of people that asks somebody in a position of authority to do or change something
Example: The petition was photocopied and distributed to workers who will collect the neccessary signatures

proof /pruːf/
(noun) information, documents, etc. that show that something is true
Example: This letter was not proofed very carefully; it is full of typing mistakes

revise /rɪˈvaɪz/
(verb) to change your opinions or plans, for example because of something you have learned
Example: The brochure was revised several times before it was sent to the printer