The control arm bushings in my 190D are pretty bad. What is the difference between "control arm bushing" and "control arm to knuckle bushing"? These are the main ones that are bad. Is this the "control arm bushing"?

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2010 Mercedes E350 4Matic - 77k miles
1986.5 Nissan D21 V6 4x4 - 276k miles
1987 Mercedes 190D 2.5 Turbo - 3??k miles
1983 Mercedes 300SD turbo parts car
2017 Honda CBR500R - 15k miles
2016 Suzuki GSX S1000 - 9k miles