This is when the objects are deformed or stick together. Momentum is still conserved in these situations, but this time the objects do not escape the collision unharmed. And unlike elastic collisions, inelastic collisions do give off quite a bit of heat when the two objects come together.
From Wikipedia: Curtana, also Cortana or Courtain, is a latinized form of the Anglo-French curtein, from Latin curtus, 'shortened', used for a ceremonial type of sword. [...] Curtana was also, according to legend, the sword of Ogier the Dane; it bore the inscription My name is Cortana, of the same steel and temper as Joyeuse and Durendal..
Cortana is Microsoftâs virtual assistant for smartphones, specifically phones running Windows 8.1. Sheâs named after a fictional AI character in Microsoftâs hugely popular Halo videogame series. In some ways, Cortana is a kind of combination of Siri and Google Now (with, arguably, more personality). She can perform task-based functions: She shows you your daily schedule, sets alarms and sends reminders. But Cortana also provides search-based information, courtesy of Bing. Iâm going to go out on a limb here and say that the majority of you have never used Cortana, given that Windows Phone accounts for just 2.5 percent of mobile operating systems worldwide.