Conditional Mood (Le conditionnel)
Subjunctive: express desires, doubts, the unknown, the abstract, and emotions
Indicative: express actions, events, and states that are believed to be true and concrete
Conditional: describe events that are not guaranteed to occur; often they are dependent on certain conditions
Si clauses, also known as conditionals or conditional sentences, are if-then constructions that express a condition to be met in order for a certain result.
They are divided into three types, depending on whether the condition is
Conditional Sentences cliffnotes.com