Verb (source code)
= Verb
A <verb> is a <part of speech> that commonly organizes a <clause (grammar)>, specifying relationships among its participants and contributing an event or state description. Forms of a <verb> may express <grammatical tense>, <grammatical aspect> or <grammatical agreement>, though the mechanisms differ across <languages>.<Universal Dependencies annotation guidelines>[VERB, Definition and distinction between main and auxiliary verbs]{ref}
Compare `Rin sleeps` with `Rin opens the box`. The second construction contains an <object (grammar)> in addition to its <subject (grammar)>; knowing a verb includes knowing how it combines with other expressions. Calling verbs “action words” misses examples such as `know`, which describes a state.
An annotation scheme must also define its boundaries. <Universal Dependencies> assigns main verbs the label `VERB` while distinguishing auxiliary uses with `AUX`. Thus a traditional grammatical description and a particular computational tag inventory need not draw every boundary identically. Stating the scheme makes category counts in a <text corpus> interpretable.
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