The first image is ambiguous; it appears to have a rough texture and resembles bricks. It comes from a structure close to where I reside. It ended up there because it was needed to hold the other bricks in the apartment building, but based on how it appears, it was probably manufactured a long time ago because it is quite rusted out or old-looking.

The second image is ambiguous since it’s difficult to discern what stands out between the leaves and the concrete floor. This picture was captured next to a tree on a sidewalk. There are many leaves on the ground since fall is approaching and the leaves are dropping.

This is also ambiguous and there are rocks or pebbles in the image, which appear to show a concrete floor. This has a rough feel that is consistent with a concrete floor. Those stones probably ended up there as part of a design to add interest rather than keeping it basic.

This picture is Obvious, we know what to focus on, as we can see the sprinkler/standpipe which is used when there’s a fire, and this picture was built near a gym, which means the purpose of it, was it to prevent a fire if there ever was a fire. But there is also a knob stands out because the color is the brightest one and it looks like it’s on the top.

The second image is obvious in seeing; a drainer is visible, it’s outside, and there is rubbish on top of it. Given that the photo was taken at a waste disposal area, it seems reasonable that there is some trash on top of the drainer. The drainer’s function is to allow rainwater to drain into the sewer when it rains.

The image depicts a sock on top of a floor; given that socks have a smoother surface than, say, a concrete floor, the texture may be soft. The purpose of socks is to cover the feet. It could drop to the ground after being dropped, possibly from a garbage sock or a wash bag. This illustration is obvious.