"It's" is a contraction that is commonly used in English to combine the words "it" and "is" or "it" and "has". However, there are various synonyms available that can be used in place of this contraction. Some of the alternatives for "it is" include "it appears", "it seems", "it looks" and "it feels". Similarly, for "it has", one can use "it possesses", "it owns", "it contains" or "it comprises". Additionally, "it's" can also be replaced by using the full forms "it is" or "it has", depending on the context and the preference of the speaker or writer.