I would say what type of work you do. It shows what the person is interested in and what the work they do and will be doing is going to look like. It also opens up information about who they are.
Yes.. it depends on the sentence its used in
Answer: Formal
This excerpt is an example of formal writing. There are several ways in which we can identify this characteristic. The excerpt discusses an academic topic, which is a literary analysis of Emerson's writing. Moreover, the sample uses formal words, such as "stress" and "pre-eminent."