Answer:
Record of the Year is related to but is different from Song of the Year or Album of the Year. Record of the year is given to for a single or one singular track from an Album. The award goes to the artist, producer, recording engineer, and/or mixer from that song. Album of the Year is given to for an Album, instead of one track or a single.
(Also I literally copied this down from my notes when I learnt this) :)