Johan Rooryck has written:

'Dissolving binding theory' -- subject(s): Anaphora (Linguistics)

'Configurations of sentential complementation' -- subject(s): Romance languages, Complement, Syntax

applied linguistics is the application of linguistics theories and findings in order to solve the language related problems while, descriptive linguistics is the field of linguistics that is concern with the description of two languages applied linguistics is the application of linguistics theories and findings in order to solve the language related problems while, descriptive linguistics is the field of linguistics that is concern with the description of two languages

In linguistics, a copula is a word or morpheme used to link a subject to its complement. It typically expresses the equality or identity of the subject and the complement. In English, the primary copula is the verb "to be" (e.g., "She is happy."), but other verbs like "seem," "appear," and "become" can also function as copulas in certain contexts.

No. Linguistics is a scientific field of language. It can be divided as : Applied Linguistics, Descriptive Linguistics and Theoreotical Linguistics.

You can find more details in the book called "The Study of Language" by George Yule or in WIKI

The science of language. Linguistics does not involve learning language after language. This is a common misconception.