Expanse is not cost in Accounting concept

In Accounting cost and expanse is a complex term. These two term in accounting cost and expanse is not similar and a synonymous term. Cost and expanse are different in their meanings. In an accounting period the cost incurred for revenue is cost. A cost is become expanse when it is expired. Any unexpired expanse is termed as cost. An asset become expanse when it is used or consumed. A cost may be an expanse. The cost of inventory when it is sold become expanse. Generally cost can be termed as a scrifice to earn revenue. Any assets until completing its useful life is termed as cost. But it become expanse when it completed its useful life.