Some words are sanitation and sanitize but they mean the exact same thing.
miserly
Some words that mean the same as together would be assembled or united. You could also use grouped or connected.
Some words that mean the same as black are dark, ebony, and sable.
alike, similar...
Some words that mean the same as startling - that are synonyms of startling - are: shocking amazing frightening astonishing surprising
flexible, alternating
Present .
dynamically, actively
There are many examples of different words that mean the same thing. Some examples of different words that mean the same thing are warm and hot and cold and freezing.
There are many words that mean the same thing as flaunt and can easily be found through a Thesaurus. Some words that are similar are boast, advertise, broadcast and display.
With what? Synonymous means that something has the same meaning, so you have to be more specific. Some slang words mean the same as other words, but some don't.