Vocabulary consisting only from characters you are able to read
億
おく
(num) 100,000,000, hundred millionjlpt4
万
まん
(num) 10,000, ten thousand, (adv) myriads, alljlpt5
怖がる
こわがる
to be afraid of, to fear, to dread, to be nervous (about), to be shy (of)godan, verb, vintrans
大笑い
おおわらい
great laughter, burst of laughtermix