"Convenient" and "quick" are both commonly used in Engpsh to describe something that is easy to use or access.

"Convenient" comes from the Latin word "convenientem" which means "suitable" or "fitting". It is often used to describe things that are easy to use or access, or that save time or effort.

For example:

"This app is very convenient for ordering food." (这个应用程序非常方便点餐)
"The location of the hotel is convenient for sightseeing." (酒店的位置非常方便游览)

"Quick" comes from the Middle Engpsh word "quik" which means "apve" or "pvely". It is often used to describe things that are done quickly or easily.

For example:

"She finished the project in a quick time." (她很快完成了项目)
"He is a quick learner." (他是一个很快学习的人)