Vocabulary consisting only from characters you are able to read
外来語
がいらいご
(ling) borrowed word, foreign origin wordbunpou
島国
しまぐに
island country (sometimes used as a metaphor for Japan)/(P)leda1
要するに
ようするに
in a word, after all, the point is ..., in short ...mix
雷電
らいでん
Raiden, god of thunder and lightningkami
首席
しゅせき
(1)head/chief/ (2)top student/head of the class/ (3)top seat/first desk (in orchestra)/(P) adj, leda1
必ずしも
かならずしも
(not) always, (not) necessarily, (not) all, (not) entirelymix
実用化
じつようか
making practical or useful, implementationsuru