there is very safe vs there is very safeful

Some examples from the web:

• Our Minecraft code generator is very safe.
• Safe place and freindly staff: the area is very safe to walk in all day long even late time.
• It's not very safe for you here.
• It doesn't seem very safe leaving your car keys laying around.
• I would say that's a very safe assumption.
• Just as we expected, a very safe distance of 2.7 million kilometres.
• Football coaches are very safe indeed.
• You're very safe right now.
• It's all very safe and professional and structured.
• Amanda, it's all very safe.
• Relatively speaking, New York City is very safe.
• A very safe and reputable farmacia.
• We buried him somewhere very safe.
• Very safe and relaxed sitting next to you.
• I am not feeling very safe here.
• Relatively speaking, New York City is very safe.
• Check-in desk every floor - it's very safe.
• And why he's not very safe.
• From this side then, we're very safe.
• You're very safe here in the forest.

Some examples from the web:

• Be careful not to do anything shameful.
• Careful here, careful, careful.
• He was careful-just not careful enough.
• I can't properly respond without careful thought.
• Careful, that could be his head.
• Better be more careful next time.
• You should be careful with dreamlands.
• The shameful Versailles Treaty, inflation, unemployment.
• We're careful before an offensive.
• Please be careful with all transmissions.
• If this guy is contacting you, Carrie, be careful.
• The one in 1986 proved fateful.
• Careful. Those are gateway sheets.
• Matthew always plays careful, especially with diagnosis.
• Careful where you step, Jack.
• The careful surgical removal and preservation of vital organs.
• Careful. Don't look down.
• Also... your killer was careful.
• The Scavenger Hunt team is so careful.
• It therefore requires very careful consideration by our Fisheries Committee.