I'll make no claim about what's best practice here, but if you were to write

Today I talked to my [[dad]] about the [[ukraine]]

, because of automated backlinking, from that point on, if you look at dad.md or ukraine.md you'd be able to see the journal note listed as a backlink. If you wanted the same link text to point to different addresses, you could write something like

Today I talked to my [[dad|people.father]] about the [[ukraine|countries.ukraine]].