tiredness vs senioritis

tiredness and senioritis both are nouns.

Word	Noun	Adjective	Verb	Adverb
tiredness	Yes	No	No	No
senioritis	Yes	No	No	No

As nouns, senioritis is a hyponym of tiredness; that is, senioritis is a word with a more specific, narrower meaning than tiredness:

tiredness: temporary loss of strength and energy resulting from hard physical or mental work
senioritis: tiredness with the final year of high school

Other hyponyms of tiredness include asthenopia, eyestrain, jet lag, exhaustion, grogginess, logginess, loginess.

tiredness (noun)	senioritis (noun)
temporary loss of strength and energy resulting from hard physical or mental work	tiredness with the final year of high school