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.)
Some alternative words to use instead of "he" include: they, it, the person, the individual, one.
you can use or , otherwise, or rather than.
a or an
traitor
like
Some words to use instead of got are Get, Gotten, Getten, have, had!
graphs can't hold stuff
Instead of the phrase "freaked out", try:stunnedstartledalarmedpanicked
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
Alternative words to use instead of "fake" could be artificial, counterfeit, synthetic, or imitation.