a car, an automobile, a carriage, a cart / a wheel, a caster / something wheel-shaped / a style of 紋 (mon, “family crest”) / short for 車海老 (kuruma ebi): a prawn

vehicle / train car

used to count vehicles

necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

unnecessary

needlessness

necessary evil

(rail transport) locomotive

one's personal thoughts

private life, personal life