Classification
Sangam Poems falls into two categories: the 'inner field' (Agam – அகம்), and the 'outer field'(Puram – புறம்) as described even in the first available Tamil grammar, the Tolkappiyam.
The 'inner field' topics refer to personal or human aspects, such as love and sexual relationships, and are dealt with in a metaphorical and abstract manner. The 'outer field' topics discuss all other aspects of human experience such as heroism, valour, ethics, benevolence, philanthropy, social life, and customs.
The division into agam and puram is not rigid, but depends upon the interpretation used in a specific context.
Read more about this topic: Sangam Literature