Topic summary
Phrases

Extracted from the Wikipedia article Phrase.
Variation among theories of syntax
Theories of syntax differ in what they regard as a phrase. For instance, while most if not all theories of syntax acknowledge the existence of verb phrases (VPs), Phrase structure grammars acknowledge both finite verb phrases and non-finite verb phrases while dependency grammars only acknowledge non-finite verb phrases. The split between these views persists due to conflicting results from the standard empirical diagnostics of phrasehood such as constituency tests.