| A | B |
| geographic or physical location where something is right now | estar |
| many idiomatic expressions | estar |
| progressive tenses | estar |
| state or condition (how something is) | estar |
| the hour, day, and date | ser |
| place of origin (where something is from) | ser |
| occupation | ser |
| nationality | ser |
| religious or political affiliation | ser |
| the material something is made of | ser |
| possession | ser |
| relationship of one person to another | ser |
| certain impersonal expressions | ser |
| where an event is taking place | ser |
| essential characteristics (what something is) | ser |
| when a noun follows the verb | ser |
| to be in agreement | estar de acuerdo |
| to be standing | estar de pie |
| to be on the way | estar en camino |
| to day dream | estar en las nubes |
| to be the same | estar en las mismas |