Forum:What's the difference between ''mate'' and ''partner'' in Template:Infobox Individual?

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I'm making a translation of Template:Infobox Individual in Chinese DW Wiki. Since I'm not a native English speaker, I got confused when it came to the labels mate and partner. At first, I thought mate was for non-humans and partner was for humans, then I noticed Alistair Gordon Lethbridge-Stewart used mate. So, I'd like to ask for your help to give me more details on these two labels. Thank you in advance! 胡大夫 ☎  09:38, 25 October 2023 (UTC)