40. A group of words may take the place of a part of speech

The Father of Waters is used as a noun, since it names something.

With blue eyes takes the place of an adjective (blue-eyed), and modifies girl.

At the window indicates, as an adverb might, where the girl stood, and modifies stood.

Are looking could be replaced by the verb look.

41. A group of connected words, not containing a subject and a predicate, is called a phrase.

A phrase is often equivalent to a part of speech.

1. A phrase used as a noun is called a noun-phrase.

2. A phrase used as a verb is called a verb-phrase.