Two definitions of the word "accent" are "to emphasize or give prominence to" and "the unique speech patterns of an individual or group." In the first definition, "accent" functions as a verb, but in the second definition, it is a noun.
Sentences using the first definition of the word are "The proper seasonings accent the flavor of food" and "The blue of her dress accents the color of her eyes." A sentence using the second definition above is "Her Southern accent fascinated the people in New York."
Another common use of the word "accent" is the noun form meaning "emphasis." The syllable most emphasized in the pronunciation of a word has the primary accent.