A trend means a direction towards which something is changing or developing. In the world today, almost everything is changing from what it used to be.
A Flowchart is a graphic representation of a logic sequence, manufacturing process or workflow. In humans, it could be related to a sequence of movements or actions involved in one’s activity.
Validity in simple terms refers to how true, authentic or genuine something is.
An upgrade is the raising of something to higher standard, grade or position. It is usually carried out to improve the quality, effectiveness, performance or value of something.
A water bottle; as the name implies, is a small container that is used for holding drinking water. Its small size allows for it to be carried from place to place.