hardback+◼◼◼[UK: ˈhɑːd.bæk] [US: ˈhɑːrd.ˌbæk]
hardcover+◼◼◼[UK: ˈhɑːdk.ʌ.və(r)] [US: ˈhɑːrdˌk.ə.vər]
↑