Final answer:
Synonyms are words with similar meanings, while antonyms are words with opposite meanings.
Step-by-step explanation:
The given question is about synonyms and antonyms. Synonyms are words that have similar meanings, while antonyms are words that have opposite meanings. In the given list, 'cozy up to' and 'curry favor with' are synonyms, as they both mean to seek someone's favor or approval. On the other hand, 'alienate', 'humiliate oneself', and 'mortify oneself' are antonyms as they all mean to distance oneself or cause embarrassment.