if you do something with ease, it is very easy for you to do it [= easily]:
They won with ease.
The security codes could be broken with relative ease.
I was impressed by the ease with which the information could be retrieved.
feeling relaxed, especially in a situation in which people might feel a little nervous
put/set somebody at (their) ease (=make someone feel relaxed)
She had an ability to put people at their ease.
You always look ill at ease in a suit.
how easy something is to use etc, or the quality of being easy to use etc:
It emphasizes the software's convenience and ease of use.
for ease of something
The bowl is removable for ease of cleaning.
the ability to feel relaxed or behave in a natural relaxed way:
He had a natural ease which made him very popular.
a comfortable life, without problems or worries
used to tell soldiers to stand in a relaxed way with their feet apart