Friendly and enjoyable; fun to be around.

Serious and reserved; not sociable.

Boring and dull; lacking excitement.

Aggressive and hostile; unfriendly.

The natural home or environment where an animal or plant lives.

A type of food that animals eat.

A place where animals go to sleep at night.

A method of communication among animals.

Not doing anything; not active.

Busy with tasks and responsibilities.

Engaged in physical activity.

In a state of constant motion.

Very important; something you must pay attention to.

Not important at all; something you can ignore.

Somewhat important; worth considering but not essential.

A minor detail; not worth your time.

A space with no air; or a machine that sucks up dirt.

A type of weather phenomenon involving high pressure.

A device used for measuring air pressure.

A method of cleaning using water and soap.

Melted by heat (like melted metal or rock).

Solidified by cold temperatures.

A type of liquid that cannot be heated.

A process of freezing substances.

To think carefully or deeply about something.

To create a work of art or literature.

To entertain or amuse someone.

To travel or explore new places.

To exclude or leave out something as a part of something else.

To include or require something as a part of something else.

To change or modify something completely.

To simplify or make something easier.

Very sad or lonely.

Extremely happy and cheerful.

Full of life and energy.

Calm and peaceful.

A weight that swings back and forth, usually in a clock.

A type of clock that uses water to measure time.

A device that measures temperature changes.

A tool used for drawing perfect circles.

To go back or move farther away.

To advance or move closer.

To remain in the same position.

To disappear completely.

To mix completely into a liquid so it disappears.

To separate into distinct parts.

To solidify a liquid into a solid form.

To heat a substance until it evaporates.