To afford college, most students need some kind of financial aid. (financial help)
Aid was provided to a woman who lost her husband.
People involved in a car accident were given first aid by paramedics.
Rescuers came to the aid of a man who was lost in the wilderness.
The starving people were in need of aid.
This word can also be used as a verb:
simple
past
past participle
aid
aided
aided
Society should aid those* who are in need of care.
Donations will aid those affected by the earthquake.
Medicine aided the people who were afflicted with the virus.
Family members of crash victims were aided by local residents.
A very slight difference in spelling is used when referring to a person who provides professional assistance. In this case the word "aid" has an "e" at the end of it.
A nurse’s aide helps nurses in a hosital.
A personal aide provides daily assistance to a person who is very elderly or in a wheelchair.
Aides to the president of a large company helps out with all sorts of small and large tasks.
Note: The word "those" is often used in place of the word "people."