command processing overhead vs command processing overhead time

command processing overhead and command processing overhead time both are nouns.

Word	Noun	Adjective	Verb	Adverb
command processing overhead	Yes	No	No	No
command processing overhead time	Yes	No	No	No

As nouns, command processing overhead and command processing overhead time are synonyms defined as:

command processing overhead and command processing overhead time: (computer science) the processing time required by a device prior to the execution of a command

Other synonyms of command processing overhead include command overhead, overhead.

command processing overhead (noun)	command processing overhead time (noun)
(computer science) the processing time required by a device prior to the execution of a command	(computer science) the processing time required by a device prior to the execution of a command