there are 4 main concepts. 
business entity concept :it denotes owner is separate from 
business.
money measurement concept: every transaction must have a in 
money form. 
going concern concept: the business will continue to 
operate for as long as.
accounting period concept: this concepts shows profit and 
loss a/c and balance sheet shoud be prepared at particular 
accounting period.

concepts 8
1.accrual concept
2.accounting period concept
3.business entity concept
4.cost concept
5.dual aspect concept
6.money measuring concept
7.going concern concept
8.realisation or historical record concept

conventions:are 4
1.consistency
2.disclosure
3.meteriality
4.conservatism

Accounting concepts define the assumptions on the basis of 
which financial statements of a business entity are 
prepared. The following are the widely accepted accounting 
concepts.
1. Entity concept.
2. Money measurement concept.
3. Periodicity concept. also called definite accounting 
period.
4. Accrual concept.
5. Matching concept.
6. Going Concern concept.
7. Cost concept.
8. Realisation concept.
Accounting Conventions emerge out of accounting practices 
commonly known as accounting principles, adopted by various 
organizations over aperiod of time. The accountancy bodies 
of the world may change any of the convention to improve 
the quality of accounting information.

Accounting concepts are basic assumption the science of accounting is based.
concepts:
separate entity concept
going concern concept
money measurement concept
dual aspect concept
cost concept
retaliation concept
Accounting period concept.
Periodic matching cost and revenue concept

accounting conventions:
these are the traditions and customs, it will help to accountant while preparing financial statements honestly.

convention of consevatisiam 
convention of fulldiscloser 
 convention of Materiality
convention of consistency