Misnomers

Ok, I couldn't find a word for what I'm talking about here and was going to call them "false descriptive names", then I found out they're called "misnomers". Knowing the correct term makes searching for more and being found much easier.
Plants And Animals

• Seedless watermelon (they aren't really seedless, they just have small seeds. Why can't they be truly seedless like grapes?)
• Peanuts are neither a pea nor a nut. 
• The tarantula hawk is neither a tarantula nor a hawk.  
• "Blue" and "yellow" when describing dogs.

Objects

• Stainless steel (not really stain-proof)
• Basically anything -proof. Waterproof, bulletproof, shockproof, etc.
• Also, any physical substance that claims to be pure. You can only really say contaminants are below the level of detection.
• Volkswagen's DQ200 Direct-Shift Gearbox, which is said to use "dry" clutches, which aren't really dry and still use oil, although less. 
• Dry and sweet when describing wines (not really dry or sweet in the conventional sense, although the words dry and sweet could have different meanings)
• Sandpaper contains neither sand nor paper.
• Lots of "dry" things - dry cleaning, dry cell batteries 
• Pencil leads aren't made of lead any more 
• Decaffeinated coffee isn't caffeine-free
• Free size / one-size-fits-all

Others

• Ironically, most countries with "democratic" in their name - The Democratic People's Republic of Korea