A problem a character must face
challenge
A description of the events in a story
plot
How a problem in a story is solved
resolution
A change that can go back to the original state
reversible
A change that cannot go back to the original state
irreversible
A particular kind of matter or material
substance
To estimate or measure how things are similar or different
comparison
An action that occurs as a response to something else
reaction
An advanced society that has a system of government and laws
civilization
The act of moving from one place to another
migration