temblor vs microseism

temblor and microseism both are nouns.

Word	Noun	Adjective	Verb	Adverb
temblor	Yes	No	No	No
microseism	Yes	No	No	No

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

temblor: shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity
microseism: a small earthquake

Other hyponyms of temblor include seismic disturbance, shock, earth tremor, tremor, seaquake, submarine earthquake.

temblor (noun)	microseism (noun)
shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity	a small earthquake