濃い【こい】
deep (colour), dark, strong (flavour, smell, etc.), thick (consistency), dense, strong (possibility, etc.), thick (i.e. "as thick as thieves"), close, deep (love, etc.)
濃厚【のうこう】
rich (flavor, color, etc.), strong (e.g. odor), heavy, thick (soup, makeup, etc.), dense, probable, (very) likely, strong (suspicion, sense, etc.), pronounced, passionate, sensuous, hot
濃縮【のうしゅく】
concentration (e.g. of a solution), enrichment, condensation
濃霧【のうむ】
heavy fog, dense fog, thick fog
濃度【のうど】
concentration, density, cardinality
濃紺【のうこん】
dark blue
濃淡【のうたん】
light and shade, shade (of colour, color), depth (of flavor), complexity, strength and weakness (of flavor)
濃密【のうみつ】
thick, dense, rich (as in taste or content), deep (colour), strong (smell, scent), crowded