offline

As adjectives the difference between offline and onsite

is that offline is of a system, currently not connected (generally electrically) to a larger network. For example, a power plant which is not connected to the grid, or a computer which is not connected to the Internet or to any other communications service while onsite is on or at a site.

As adverbs the difference between offline and onsite

is that offline is while offline; with an offline system while onsite is on or at a site.

Atline is likely misspelled.

Atline has no English definition.

As an adjective offline is

of a system, currently not connected (generally electrically) to a larger network. For example, a power plant which is not connected to the grid, or a computer which is not connected to the Internet or to any other communications service.

As an adverb offline is

while offline; with an offline system.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective offline is

of a system, currently not connected (generally electrically) to a larger network for example, a power plant which is not connected to the grid, or a computer which is not connected to the internet or to any other communications service.

As an adverb offline is

while ; with an offline system.