A verb is a part of speech that usually denotes action ("bring", "read"), occurrence ("to decompose" (itself), "to glitter"), or a state of being ("exist", "live", "soak", "stand"). Depending on the language, a verb may vary in form according to many factors, possibly including its tense, aspect, mood and voice. It may also agree with the person, gender, and/or number of some of its arguments (what we usually call subject, object, etc.).
Verbs can be conveyed in many ways. Lets look in particular at the word "wear"
She wears a pink dress - This sentence is made up of three main parts, she, being the noun. Wears, being an action or 'doing' word. Pink, describing the noun about to be added to the sentence and, Dress, the noun which pulls all these words together (giving them all one key point) to complete the sentence.