This is the 279th most frequent Japanese word.
計画
Plan; project; schedule.
Here, 計画 is used to refer to a 'plan' or 'scheme' that has been organized for completing a task.
私たちの計画は順調に進んでいます。
Our plan is progressing smoothly.
In this sentence, 計画 is used to denote making preparations or arrangements for an activity, specifically 'the planning' of a trip.
旅行の計画を立てるのが楽しいです。
Planning a trip is enjoyable.
Here, 計画 is used to mean 'plans' concretely addressing what steps or methods to take moving forward.