List: noun (common) (futsuumeishi)

popular  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• learning, acquisition (of a skill, knowledge, etc.)

popular  JLPT N2  noun  noun (generic) 

• wick, marrow, staple (for stapler), (pencil) lead, stuffing, pith
• core, heart, centre, center
• pistil (of a flower)
• stamen

popular  noun  noun (generic) 

• vacuum cleaner, vacuum, hoover
• cleaning device

popular  rarely used kanji form  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• treason, treachery, mutiny, rebellion, insurrection

popular  noun  noun (generic) 

• countdown

popular  search-only kanji form  JLPT N1  noun  noun (generic) 

• beach, foreshore

popular  JLPT N2  noun  noun (generic)  な adjective  adjective (generic) 

• misfortune, bad luck, ill luck, ill fortune

popular  な adjective  adjective (generic)  noun  noun (generic) 

• imperfect, incomplete, faulty, defective

popular  JLPT N1  な adjective  adjective (generic)  noun  noun (generic) 

• irregular, unseasonable, changeable, unsettled, abnormal

popular  noun  noun (generic)  な adjective  adjective (generic) 

• disadvantage, handicap, drawback, inadvisability, inexpediency, loss