guest; visitor / customer; client / patron

need, requirement, demand

the newly industrializing economies

look back, turn back, turn around / remember, review, examine

looks back, double-takes (often as 一(いっ)顧(こ) (ikko)) / (figuratively, chiefly in the negative) care, concern; amount one cares

respond, reply, answer (a question, call, etc.) / accept, admit, agree, consent / in accordance with / adequate, balanced, fitting, suitable

(rare) an acceptance, admittance, agreement, consent

a surname

responsive / responsible / corresponding / receptive / related / applicable / suitable

regular customer; patron