a situation where two things share a relationship with each other
Protein is an essential part to a healthy diet as well as an important nutrient for muscular development.

verifiable truth
Her biography is full of facts about her early life.

facing someone or a group
He stood in front of the class and gave a speech.

a group of things arranged in a certain way
We made a list of things we need to take camping.

the mental ability of retaining and reviving facts, events, impressions, etc.
The memory of her face will forever be in my mind.

the central point, position, or part
A scared dog was standing in the middle of the road.

occurred one time only in the past
I once had a woman ask me out on a date.

to copy sounds or images onto a machine that can play them back
We used the camcorder to record Tom's football game.

to do again
Tom's teacher had to repeat the instructions several times before Tom understood.

a state of difficulty or stress
I have trouble paying attention in class.