Vocabulary consisting only from characters you are able to read
母国語
bokokugo
mother tongue, native languagemix
流行語
rjuukougo
buzzword, vogue word, popular phrase, word (phrase) in fashion or on everybody's lipsmix
成る
naru
(1)(uk) to become, to get, to grow, to be, to reach, to attain, (2)to result in, to prove to be, (3)to consist of, to be composed of, (4)to succeed, to be complete, (5)to change into, to be excha godan, verb, vintrans