Meaning : A person or thing that is a resource that helps make something easier or possible to do.
Example :
Visual aids in teaching.
His job was to give technical assistance over the phone.
Synonyms : assistance, help
Meaning : The activity of contributing to the fulfillment of a need or furtherance of an effort or purpose.
Example :
He gave me an assist with the housework.
Could not walk without assistance.
Rescue party went to their aid.
Offered his help in unloading.
Synonyms : assist, assistance, help
Meaning : Gift of money or other material help to support a person or cause.
Example :
Economic assistance to depressed areas.
Synonyms : assistance, economic aid, economic assistance, financial aid, financial assistance