Vocabulary consisting only from characters you are able to read
昼寝
ひるね
nap (afternoon), siestamix
忙中
ぼうちゅう
(in the midst of) busynessmix
教え
おしえ
teaching, instruction, teachings, precept, lesson, doctrinejlpt3
予備
よび
preparation, preliminaries, reserve, sparemix
Pod kabátkem má černobílé šaty.byousha
経過
けいか
passage, expiration, progress, transitionsuru
使う
つかう
(1)to use (a thing, method, etc.)/to make use of/to put to use/ (2)to use (a person, animal, puppet, etc.)/to employ/to handle/to manage/to manipulate/ (3)to use (time, money, etc.)/to spend/to consu godan, jlpt5, leda1, verb, vtrans
難問
なんもん
perplexity, difficult question, difficult problemsuru