Their research shows a 'link' between high cholesterol and an increased risk of heart attacks. [=shows that high cholesterol causes an increased risk of heart attacks]
Your raise 'is linked to' your job performance. [=your raise is related to your job performance; the size of your raise is related to how well you do your job]
The elderly couple 'linked arms' [=kept their bent arms hooked together at the elbow] as they walked down the street.
(..) There's been a lot of bad blood. They hit us, so we hit them back. Through our newspaper contacts we've been able to put out material about McCluskey's link with Sollozzo in the drug rackets. So things are loosening up. And I'm sending Fredo to Las Vegas, under the protection (..)1972 The Godfather