Page "Coalition government" Paragraph 1

To deal with a situation in which no clear majorities appear through general elections, parties either form coalition cabinets, supported by a parliamentary majority, or minority cabinets which may consist of one or more parties.

Cabinets based on a coalition with majority in a parliament, ideally, are more stable and long-lived than minority cabinets.

While the former are prone to internal struggles, they have less reason to fear votes of non-confidence.

Majority governments based on a single party are typically even more stable, as long as their majority can be maintained.