antonyms- words with opposite meaning
fast/slow
young/old
♦Think of "anti" as in "not"
synonyms- words with similar (same) meaning
sick/ill
wrong/incorrect
♦Think of the "s" as in "same"
homonym- words that are spelled the same and sound the same but have different meanings
incense (perfume)/ incense (to enrage)
♦Homonyms break down into more specific categories which I will discuss in another post.