Here are some pairs (and one triplet) that are a bit more complicated than yesterday's list.
ACCEPT and EXCEPT may, depending on where you are, may sound identical, but they are quite different words. Accept is a verb that means agree with or receive. Except is a preposition that means apart from.
ACUTE and CHRONIC: Acute means sharp as in an angle, or describes a disease that rapidly develops and gets worse. Chronic illness or problem may also be severe, but it is long-lasting and lingering.
ADVERSE and AVERSE: Adverse means unfavorable or hostile. Averse means having a strong feeling of repugnance or opposition.
AFFECT and EFFECT: Affect is a verb that means to influence something. Effect is a noun that means the result of something. (Just to complicate matters, these two words have speicalized academic meanings, but for most of us, this distinction doesn't matter.) Remember, if something affects you, it has an effect on you.
CONTIGUOUS, CONTINUAL, and CONTINUOUS: Contiguous means touching or adjoining in space. Continual means repeated frequently. Continuous means uninterrupted in time or space.
DISCREET and DISCRETE: Discreet means circumspect. Discrete means having separate and distinct parts.
DISINTERESTED and UNINTERESTED: Disinterested means not having a bias or personal stake in an issue. Uninterested means to have no interest in something.
EMIGRATION and IMMIGRATION: Emigration is leaving a country, while immigration is arriving into a new country. It all depends on where you stand in relation to the act.
FLOUT and FLAUNT: You flout a rule by flagrantly ignoring it. You flaunt something by showing it off.
PAST and PASSED: Past, the adjective, refers to something that has previously occurred. Passed, the verb, is the past tense of pass.