Is the word "Very" an adjective, adverb or a verb?

I know U all are probably thinking I am crazy for asking this simple question but I haven't been on here for a long time now because I have been sick w/ a brain tumor and am losing my memory. Could someone help me help my Granddaughter who is now living with me and my husband and has trouble too with her English homework? Thank You all in advance and May God Bless You Today and Always!