What part of speech are the words in ( ) ?

Question

anonymous · Answer

Surrounded by the world's (stormiest) (seas), Antarctica is (even) more (inaccessible) because (of) the masses of ice. In 1907, Ernest Henry Shackleton (organized) a (British) (expedition) (into) Antarctica designed to reach the South Pole, (and) the South Magnetic Pole. Shackelton (would) (lead) the expedition to the geographical South Pole, (but) (Professor Edgewood David) would move (toward) the South Magnetic Pole, the area (that) attracts the needle of a compass. The poor (choice) of using (Siberian) ponies (instead of) sled dogs to transport the supplies for the 1,700-mile trip (eventually) proved to be the (major) reason for Shackleton's failure.

(stormiest) adjective
(seas) noun

(inaccessible) adjective

anonymous · Answer

@Legends @Tootles143