It depends what kind of cold you are asking about. I would recommend searching a thesaurus: thesaurus.com is a place you could look.
overall
Substances would work
It is not advisable to use a cloth to hold back the bleeding. It is medically advisable to use the gauze.
2
Black. Depends on how cold. Any color except green.
cold war
Some alternative words to use instead of "he" include: they, it, the person, the individual, one.
you can use or , otherwise, or rather than.
Some words to use instead of got are Get, Gotten, Getten, have, had!
like
traitor
a or an
Instead of the phrase "freaked out", try:stunnedstartledalarmedpanicked
Alternative words to use instead of "fake" could be artificial, counterfeit, synthetic, or imitation.
You could use words like us, we, our, ourselves.
If one chooses to use figures instead of words in a sentence/paragraph one must be consistent. That is use ONLY figures or ONLY words and do not mix them both.
great