J.R.R. Tolkien popularized the term in "The Lord of the Rings," and since then ... an Orc is referred to as "a devouring monster; an ogre; spec. a member of an imaginary race of subhuman creatures ...

In The Lord of the Rings films, viewers see Orcs using trolls as battering rams and transport, whereas Azog entrusts his ogre allies with important missions, which they carry out to deadly effect.