Can we think of an address a mini-account, and is re-useable and disposable?
No, you should not reuse addresses/treat them as a &quot;mini-account&quot;. You should create a new one for every transaction and not re-use old addresses.
Your wallet software will generally handle this automatically for you -- just remember to request a new receive address each time you receive new bitcoin, and it should give you a new address that you should only use once.