List: Colloquial vocabulary

Wordpopular  ateji  rarely used kanji form  JLPT N4  usually written using kana alone  onomatopoeic or mimetic word  adverb  archaic 

• surely, undoubtedly, almost certainly, most likely (e.g. 90 percent)
• sternly, severely
• having no slack, rigid, stiff, tight
• suddenly, abruptly, instantly

Wordpopular  JLPT N4  usually written using kana alone  な adjective  adjective (generic)  adverb  noun  noun (generic)  noun taking the genitive case particle の 

• mostly, ordinarily, usually, generally
• probably
• most, almost all
• ordinary
• proper, appropriate, moderate