A phrase typically appears within a clause, but it is essential english phrases pdf also for a phrase to be a clause or to contain a clause within it. There is a difference between the common use of the term phrase and its technical use in linguistics.
In common usage, a phrase is usually a group of words with some special idiomatic meaning or other significance, such as “all rights reserved”, “economical with the truth”, “kick the bucket”,and the like. It may be a euphemism, a saying or proverb, a fixed expression, a figure of speech, etc. In grammatical analysis, particularly in theories of syntax, a phrase is any group of words, or sometimes a single word, which plays a particular role within the grammatical structure of a sentence. It does not have to have any special meaning or significance, or even exist anywhere outside of the sentence being analyzed, but it must function there as a complete grammatical unit.
For example, in the sentence Yesterday I saw an orange bird with a white neck, the words an orange bird with a white neck form what is called a noun phrase, or a determiner phrase in some theories, which functions as the object of the sentence. This means that some expressions that may be called phrases in everyday language are not phrases in the technical sense.