Head smashing was also present enough in episode 5x09 to give us reason to believe Negan is around. When Noah found his old house, he found his mother with her head smashed in the living room. Very similar to what Negan did to Glenn.
A trade-off is a situation where you make a compromise between two things, or where you exchange all or part of one thing for another. ...the trade-off between inflation and unemployment. American English: trade-off
Trade name. A trade name, trading name, or business name is a pseudonym used by companies to perform their business under a name that differs from the registered, legal name of the business. In a number of countries the phrase trading as (abbreviated t/a) is used to designate trade names. In the United States, the phrase doing business as (abbreviated DBA, dba, d.b.a. or d/b/a) is used. That is also sometimes used in Canada; but operating as (abbreviated to o/a) and trading as (abbreviated to T/A) is the most common form.