to cause physical harm to a person or damage a place or thing
The soldiers will attack if you threaten them.
camouflage
to hide something from view by making it look like its background
The chameleon camouflaged with the tree, to hide from its predators.
defense
the act or means of keeping something safe
The defense force protects our country.
enemy
someone who is opposed to another; someone who tries to harm another
It's not good to have enemies, you should try to be friends with everyone.
environment
all the things that affect the health, growth or progress of something
The environment is very fragile right now, we all must look after it.
escape
to leave a place, particularly when someone or something is keeping you there
We have to escape tonight from prison.
necessary
being needed or required
It is not necessary to go to school on Sunday.
pain
a feeling of physical or mental hurt or suffering
I fell over and felt great pain in my leg.
poison
a substance that can cause sickness or death when it is consumed by a person or animal
Romeo drank the poison.
survival
the act or state of continuing to exist, especially when facing difficulties
It is our job to ensure the polar bears' survival.
transform
to change something completely in appearance, structure, or character, usually making it better
In the movie I watched last weekend, cars transformed into robots!