Explosive
Part of speech: noun
Definition: Explosive substance.
Part of speech: adjective
Definition: With the capability to, or likely to, explode. Having the character of an explosion. Easily driven to anger, usually with reference to a person.
Example sentence: Palestine is the cement that holds the Arab world together, or it is the explosive that blows it apart.
Unstable
Part of speech: adjective
Definition: Having a strong tendency to changeFluctuating; not constantfickleunpredictableReadily decompasableRadioactive, especially with a short half-life
Example sentence: We're the only species who follow unstable leaders. This is true - it has little to do with America - around the world, pack leaders are unstable. Animals don't follow that.