Source: http://www.vocabulary.com/
1) capability means potentiality.
A capability is something a person or a thing is able to do. It's hard to find a cell phone that doesn't include other capabilities, like taking pictures or storing MP3s.
Inside the word capability is the word ability. Note the fine distinction between them. If you have an ability, it means you know how to do something. If you have a capability, it means you have the power to do something. Buying uranium gives a country the capability of making nuclear weapons, but first they need scientists with the ability to do the work.
2) Monstrous means evil
Monstrous is an adjective that describes something gross or shocking. It can refer to the size, shape, or general look of something. If your face or body is monstrous, it's misshapen and horrifying to look at.
The word monstrous describes something that you'd like to avoid looking at, if at all possible. The word comes from the Latin monstruosus, which means "unnatural, deviating from the natural order, hideous." When discussing size, monstrous means that something or someone is so huge it's frightening. Monstrous can also describe someone or something that's extremely cruel or brutal, like a monstrous dictator or monstrous lies.
3) Typhoon
What a hurricane is to the United States, a typhoon is to South Pacific and Asian nations. It's a giant, rotating storm that brings awesome wind, rain, and destruction.
One thing that makes typhoons like hurricanes—aside from intense weather—is that we give them names. Why? That's a discussion for another day. If you're having a hard time recalling the meaning of typhoon, try this silliness: "The typhoon knocked out all the power. I cannot use the telephoon." You can also remind yourself that typhoon rhymes with another form of harsh weather, the monsoon.
4) Nothing is beyond the reach of his ambition, and his ambition soars at random; he is light-hearted, generous, and enthusiastic; in short, the fledgling bird has discovered that he has wings.
In this sentence, enthusiastic means : having or showing great excitement and interest.
5)Aggression:
It was no longer a war of defense but now a war of ________ and conquest.
Aggression is hostile, purposely unfriendly behavior that can sometimes be violent. A motorist who shows aggression for another may follow too closely, honk the horn, or otherwise try to intimidate.
When someone deliberately tries to make another person feel intimidated or threatened, it's an act of aggression. Forceful, unfriendly behavior towards others is one example of aggression, and one country's hostile action toward another is also a kind of aggression. It's been used since the 1600s to mean "an unprovoked attack," from the Latin root word aggressionem, "attack," and in 1912 aggression was first used to mean generally "hostile behavior."
