Unless you are using features not supported in Word 2007, the document would appear the same in that version, yes. (An example of unsupported features would be the OpenType settings, found in the Font dialog box.)

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Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional

I had to buy an Open Type Font called Avenir as that is what they use and wanted me to use as well. When I open the advanced settings in the font dialog box the open type features are
Ligatures: None
Number spacing: default
Numer Forms: default
Stylistic sets: Default
box of Use Contextual Alternatives is not checked

Is this OK?
Thanks for answering my question, really helps