This link shows how many installations were possible for Office 2010: https://www.microsoft.com/en-us/microsoft-365/blog/2013/02/19/office-2013-and-office-365-installations-and-transferability/
Where can I find a similar information for Office 2019?
I'm telling about the permanent and transferable version of Microsoft Office 2019 (not 365), i.e. the unlimited version, box-packaged version, also known as FFP or Retail.
I believe Office 2020 Home & Business was installable one two computers at the same time (typically one desktop and one notebook). As far as I know, this possibility was removed with later versions of Office.
My question is also if in Microsoft's jargon "installation" an "activation" are synonyms, or on the contrary if "installation" mean the number of devices installed at the same time, so that the number of activations in a lifetime could possibly be higher. (e.g. The software is installed only on one machine, but the user changes several times his computer over his life.)