1. words that connect other words, phrases, or clauses (such as ‘and’, ‘but’, ‘or’)
Usage: grammar
2. the action of joining or combining things together
Usage: formal
3. an alignment of two or more celestial bodies in the same direction as seen from Earth
Usage: astronomy

Examples

• Students must learn to use conjunctions properly in their writing.
• The most common conjunctions are ‘and’, ‘but’, and ‘or’.
• Coordinating conjunctions connect words of equal importance.
• The conjunction of these two factors led to the problem.
• Mars and Jupiter will be in conjunction next month.
• The conjunction of the moon and Venus was visible at dawn.