masterpiece

outstanding accomplishment

the most interesting, intense, violent, energetic etc part (of an event, game, speech, storm etc)

peak, culmination

the addition of a particular word or words, the spoken force used etc to make the significance clear or to show importance when speaking or writing

importance, prominence

to give emphasis to (something)

stress, give priority to

to make (something) clear; help to explain (an idea, fact); to give light to (something)

make light

to add pictures, diagrams, photographs etc to (something); to explain (something) by using examples etc

demonstrate, exemplify

a line drawn under a word or words; to emphasize (a remark, warning etc)

emphasize; mark