Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
tree, woodjlpt5, shokubutsu
七つ ななつ sevenjlpt5
せん 1,000, thousandjlpt5
ちから strength, powerjlpt4, leda1
一つ ひとつ onejlpt5
(num) fourjlpt5, mix
二つ ふたつ twojlpt5
はち eightjlpt5
火力 かりょく heating power, steam powermix
四十 よんじゅう 40math