She knocked on the closed door but no one answered.
sliding door
Frequency:
50
%
The sliding door to the patio was difficult to open.
glass door
Frequency:
45
%
He could see her silhouette through the glass door.
Idiomatic Expressions for door
Phrase: open doors
Meaning: to create opportunities or provide access to new possibilities
Usage: Her internship at the company opened doors for her in the industry.