The prepositions are the words which show the relationship between the pronoun and the nouns. On the other hand, the prepositional phrase starts with the prepositions and end with the object of a preposition, having one or more modifiers to describe.
Prepositional phrase lacks either a verb or subject. It consists of a preposition and a noun or preposition and a pronoun. It can also act as an adverb or adjective. Adverb phrase refers to the group of words which qualifies adjectives, verbs or adverbs. Adjective Phrase refers to the modification of noun or pronoun in a sentence with group words.
Hence, in the above phrase "I did not miss the sounds of city life.", the prepositional phrase is 'of city life.'
'of' is the preposition used to modify 'city life' as a noun.
