To hide sth/sb by being in front of it

Hide
- The house was hidden from the road by tall trees.
- Clouds hid the stars.
- The man's heavy mustache hid his upper lip completely.

Conceal
- The shadows concealed her as she crept up to the house.
- The path was concealed by long grass.
- A long velvet curtain concealed a small doorway.
- a line of sand dunes concealed the distant sea
- clouds concealed the sun.

Block
To prevent something from being seen.

- A row of tall trees had blocked the view of the valley.
- a line of spruce trees that blocked his view of the long north slope of the mountain.
- The huge building across the street blocked our view of the sea.

Obstruct
To conceal something or someone by being positioned in front of it and stopping you seeing it properly:

- Claire positioned herself so as not to obstruct David's line of sight.
- The trees in their garden obstruct our view of the ocean.
- The pillar obstructed our view of the stage.

Screen
To hide someone or something by being in front of them:

- The cottage was screened by the trees
- Their activities screened by darkness
- A line of tall trees screened the shop from the street.
- Most of the road behind the hotel was screened by a block of flats.

Obscure
To prevent something from being seen properly:

- One wall of the parliament building is now almost completely obscured by a huge banner.
- The view was obscured by mist/smoke/fog.
- clouds/mist that obscured the mountain peak.

Mask
To block the view of something so that it can not be seen or noticed:

- Undergrowth masked the entrance to the cave.
- The new accommodation block has all but masked the original building.
- the poplars masked a factory.