Taking-off, also known as departure or lift-off, refers to the act of leaving the ground or beginning a journey. Other synonyms for taking-off include ascension, initiation, launch, lift-off, start, and departure. When it comes to aviation-specific terminology, there are further synonyms to describe taking-off, such as rotation, liftoff, and climb-out. Similarly, in the context of construction and architecture, taking-off can also refer to the process of calculating the quantities of materials such as cement, bricks, and timber required to build a structure. Regardless of the field, the different synonyms for taking-off help to convey the same idea of something or someone beginning a journey, whether physical or figurative.