Both Uses

highlight
in
Hillbilly Elegy
(Edited)

In 2009, ABC News ran a news report about Appalachian America, highlighting a phenomenon known locally as "Mountain Dew mouth": painful dental problems in young children, generally caused by too much sugary soda.
p. 19.7 *

highlighting = emphasizing (drawing attention to)
This wasn't one of my prouder moments, but it highlights the inner conflict inspired by rapid upward mobility: I had lied to a stranger to avoid feeling like a traitor.
p. 205.9

highlights = emphasizes (calls attention to)

Definitions:

(1) (highlight as in: highlight the main findings)
emphasize (call attention to something)
(2) (highlight as in: highlights of the year)
something that stands out
(3) (highlight as in: highlights and shadows)
noun: something that is lighter and draws attention -- such as an area of a painting

verb: making something lighter -- such as an area of a painting
(4) (highlight as in: highlights in hair)
noun: a strip of hair that is lighter

verb: making strips of hair lighter
(5) (highlight as in: highlights with a yellow marker)
to mark important text; or something that is marked to draw attention to it -- as with a felt-tip pen with a bright, transparent ink
(6) (highlight as in: highlights the text and deletes)
select (on a computer screen)
(7) (meaning too rare to warrant focus)
The form highlighter, can also refer to a type of makeup that draws attention to parts of the face.