Transaction costs & Execution costs

Transaction costs are based on the cost of sending data to the blockchain. There are 4 items which make up the full transaction cost:

1. the base cost of a transaction (21000 gas)

2. the cost of a contract deployment (32000 gas)

3. the cost for every zero byte of data or code for a transaction.

4. the cost of every non-zero byte of data or code for a transaction.

Execution costs are based on the cost of computational operations which are executed as a result of the transaction.

You can see the breakdown in the yellow paper, Appendix G.

Link: https://ethereum.stackexchange.com/questions/5812/what-is-the-difference-between-transaction-cost-and-execution-cost-in-remix