Third-person singular simple present indicative form of show off.
The later one is entirely in verse, and shows off the author's mastery of the artificial rules of prosody and poetics, according to which a poem, a maha-kavya, ought, according to the later writers on the Ars poetica, to be composed.
It provides a good view of the fjords, and shows off some impressive seamanship, manouvering very large ferries in very small harbors.
Charlie finds some skates in the toy department and shows off by skating around the balcony blindfold.
Chris Cornell shows off his vocal prowess, he sounds quite soulful here, in fact.
Kelly shows off her intense, clear voice and powerful vibrato.