Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
幼い おさない (1)very young, (2)childish, immature adj
効用 こうよう use, utility, effect, benefitmix
赤ん坊 あかんぼう babyhito, jlpt4
渋滞 じゅうたい congestion (e.g. traffic), delay, stagnationjlpt3, suru
背骨 せぼね spinehito