Final answer:
To answer the English language question, synonyms for 'disappear' include 'vanish' and 'depart', and for 'appear', synonyms could be 'emerge' or 'show up'. Synonyms and antonyms are vital for vocabulary development and effective communication.
Step-by-step explanation:
The subject of your question involves finding synonyms for the words 'disappear' and 'appear' and understanding the use of synonyms and antonyms in vocabulary. To find synonyms, we can either look them up in a dictionary or use a thesaurus. For instance, synonyms for 'disappear' include 'vanish' and 'depart', while synonyms for 'appear' could include 'emerge' or 'show up'. When writing or speaking, it is often useful to replace obscure words with more familiar synonyms to make sure your audience understands. Alternatively, using antonyms could change the meaning of your sentences, so be cautious and use them purposefully for contrast rather than as substitutions for words you're uncertain about. It's also worthwhile to underline key words, consider synonyms and explore different combinations to enhance vocabulary and understanding in various subjects.