Manual
Part of speech: noun
Definition: Handbook. A booklet that instructs on the usage of a particular machine. A keyboard for the hands on a harpsichord, organ, or other musical instrument. A manual transmission; a gearbox, especially of a motorized vehicle, shifted by the operator. A vehicle with a manual transmission.
Part of speech: adjective
Definition: Done or operated by hand. Of or relating to the hand. Human initiated or controlled (contrasted with automatic).
Example sentence: Keep it simple, stupid. Good game design shouldn't keep you looking at the manual but should have enough depth where you feel like you bring something new to the game every time you play.
Extremity
Part of speech: noun
Definition: The most extreme or furthest point of something.An extreme measure.A hand or foot.
Example sentence: There are a lot of parallels between the historical Henry VIII and Jonathan Rhys Meyers. There's an oscillation and extremity of emotion throughout his repertoire that lends itself beautifully to the nature of Henry VIII, definitely. He will push things to the limit, and yet remain in emotional control.