mammoth: any of numerous extinct elephants widely distributed in the Pleistocene; extremely large with hairy coats and long upcurved tusks
mammal: any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk
interface: (chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases)