Replacement of a word with another changes the meaning of the sentence if the words used are not synonyms. So, if we replaced the word "versatility" with the synonym "functionality," this sentence will change in the sense that;
The connotation of functionality implies a working tool, while versatility implies more than one use.
A functionality implies a tool that is used for a specific purpose. Versatility connotes the idea of being used for several purposes.
So, replacing the word versatility with functionality will lay more emphasis on the working nature of the tool instead of its varied uses.
