Hierarchy : a system or organization in which people or groups are ranked one above the other according to status or authority.

-a group of people who are together based on their status

en.wikipedia.org/wiki/Hierarchy

Parenting (computer graphics) : Parenting makes a child object’s transformations (moves, rotations, and scales) relative to those of a parent object.

-Parenting computer graphics makes computer objects move.

www.sidefx.com/docs/houdini13.0/basics/parent

Key Frame : The starting and ending position of an object

-The end and beginning of an object

en.wikipedia.org/wiki/Key_frame

Playblast : A low-resolution crude render of computer-generated imagery used in CGI production as a check for character and prop positioning and lighting placement. 

-A resolution of the lightening placement 
en.wiktionary.org/wiki/playblast