modal vs mode

modal and mode both are nouns.

Word	Noun	Adjective	Verb	Adverb
modal	Yes	Yes	No	No
mode	Yes	No	No	No

modal (noun)	mode (noun)
an auxiliary verb (such as `can' or `will') that is used to express modality	how something is done or how it happens
	the most frequent value of a random variable
	any of various fixed orders of the various diatonic notes within an octave
	a classification of propositions on the basis of whether they claim necessity or possibility or impossibility
	verb inflections that express how the action or state is conceived by the speaker
	a particular functioning condition or arrangement

modal (adjective)	mode (adjective)
relating to or expressing the mood of a verb
of or relating to a musical mode; especially written in an ecclesiastical mode
relating to or constituting the most frequent value in a distribution