consideration + careful thought; thinking about something ☊

preparation + act of making ready for a purpose or activity ☊

concentration + paying ( a lot of) attention to a task ☊

generation + People born and living at about the same time ☊

illustration + picture that helps explain something ☊

registration + act of recording information on an official list ☊

administration + The work of running something, e.g. a business ☊

celebration + party/event where people rejoice over something ☊

cooperation + instance when someone agrees to work with at least one other person, to get something done ☊

corporation + big company or a combination of several companies ☊

demonstration + Explanation of how something works (e.g. product) ☊

ratio + quantitative relationship in size, etc ☊