Thank you, Philip and Anon.
Can I apply Philip's suggestion that said that 'Different' would mean 'something other than what we now have' to these as well?
We need to get good advice from people of various levels of expertise.
Many people from different schools/companies came to our opening ceremony.
In those two cases, I think you would normally see the sentences with the words as underlined and the option to substitute with the other word do not seem to exist.