Definition of "Mode" :

noun: how something is done or how it happens

"Their nomadic mode of existence."

noun: the most frequent value of a random variable

noun: any of various fixed orders of the various diatonic notes within an octave

noun: verb inflections that express how the action or state is conceived by the speaker

noun: a classification of propositions on the basis of whether they claim necessity or possibility or impossibility

noun: a particular functioning condition or arrangement

"Switched from keyboard to voice mode."