Consecutive and subsequent both relate to order, but they focus on different details.
Use consecutive when people, events, or periods follow one another without a break in the sequence. In “Maya exercised for six consecutive days,” she exercised every day during that six-day period. There was no skipped day. The word often appears with numbers, dates, wins, meetings, or other countable parts of a series.
Use subsequent for something that happens or exists after an earlier event or time. It does not say that the later thing came immediately afterward, and it does not describe an unbroken series. In “Subsequent meetings were held online,” the meetings happened after an earlier meeting. Days or weeks may have passed between them.
Compare these examples:
- The company reported profits for three consecutive quarters. Each of those three quarters was profitable, with none missing from the run.
- In subsequent quarters, the company changed its strategy. This means later quarters; it does not tell us whether they were uninterrupted.
- After two consecutive delays, subsequent flights left on time. The delays formed an unbroken pair, while the subsequent flights were simply later flights.
A helpful question is: are you emphasizing no gaps, or only what came later? Choose consecutive for an uninterrupted sequence. Choose subsequent when the key relationship is “after that,” even if time or other events came in between.