List: noun (generic)

popular  noun taking the genitive case particle の  adjective (generic)  な adjective  noun  noun (generic)  mathematics 

• optional, voluntary, arbitrary, random, discretionary, facultative, spontaneous, any
• arbitrary

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

• showy, loud, flashy, gaudy

popular  search-only kanji form  noun  noun (generic)  expression 

• article for sale, goods for sale, offering
• main attraction, specialty, selling point
• For Sale

popular  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic) 

• white paper, flyleaf
• blank paper
• clean slate, lack of prior opinion, positions, etc.
• scratch, beginning

popular  noun  noun (generic) 

• impressiveness, impact, force, intensity, presence, appeal, strength, punch, edge, vigor

popular  noun  noun (generic) 

• punishment, penalty
• penal regulations, penal provisions, penal code

popular  JLPT N3  noun  noun (generic)  abbreviation 

• board, plank
• sheet (of metal), plate (of glass), pane, slab
• cutting board, chopping board
• chef (esp. of high-end Japanese cuisine), cook
• stage (i.e. at a theatre)

popular  JLPT N3  noun  noun (generic) 

• skin, hide, pelt, fur
• rind, peel, husk, bark
• shell, sheath, wrapping
• mask (hiding one's true nature), seeming

popular  search-only kanji form  JLPT N2  noun  noun (generic) 

• skin

popular  JLPT N5  noun  noun (generic) 

• nose