Substances would work
overall
It depends what kind of cold you are asking about. I would recommend searching a thesaurus: thesaurus.com is a place you could look.
2
Bang, bash, belt, bump, criticize, damn, ping, rap, roast, smash, sock, strike, tap, and whack are synonyms for knock.
Check the 'Related Link' below.
things.
Articles, items, or stuff. (Note that "stuff" is considered slang, but many people do use it instead of "things"-- for example: I have a lot of stuff in my basement.)
you can use or , otherwise, or rather than.
Acquired, obtained, received, or gained are alternative words that can be used instead of "got."
a or an
Some alternative words to use instead of "he" include: they, it, the person, the individual, one.
traitor
like
Some alternatives to "as" include "since," "because," "while," and "given that."
A list of 12 words to use, rather than 10, instead of using stuff: 1. Things 2. Items 3. Crap 4. Materials 5. Equipment 6. Supplies 7. Substances 8. Junk 9. Objects 10. Articles 11. Trash 12. Matter
Instead of the phrase "freaked out", try:stunnedstartledalarmedpanicked
You could use words like us, we, our, ourselves.