The noun aid has 4 senses (first 3 from tagged texts)
1. (10) aid, assistance, help -- (a resource; "visual aids in teaching"; "economic assistance to depressed areas")
2. (10) aid, assist, assistance, help -- (the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose; "he gave me an assist with the housework"; "could not walk without assistance"; "rescue party went to their aid"; "offered his help in unloading")
3. (6) aid, economic aid -- (a gift of money to support a worthy person or cause)
4. care, attention, aid, tending -- (the work of providing treatment for or attending to someone or something; "no medical care was required"; "the old car needs constant attention")
Overview of verb aid
The verb aid has 2 senses (first 2 from tagged texts)
1. (36) help, assist, aid -- (give help or assistance; be of service; "Everyone helped out during the earthquake"; "Can you help me carry this table?"; "She never helps around the house")
2. (1) help, aid -- (improve the condition of; "These pills will help the patient")