客套

客套	kè tào	polite greeting / civilities / to exchange pleasantries
客	kè	customer; visitor; guest / classifier for servings or portions (when ordering food)
套	tào	to cover / to encase / cover / sheath / to overlap / to interleave / to model after / to copy / formula / harness / loop of rope / (fig.) to fish for / to obtain slyly / classifier for sets, collections / bend (of a river or mountain range, in place names) / tau (Greek letter Ττ)