The thing that holds paintings is commonly referred to as a "frame." A frame serves to protect the artwork, enhance its presentation, and make it easier to display. Frames can come in various materials, styles, and sizes to complement the painting. In some contexts, the term "mount" may also refer to the backing or support for the artwork.
To answer a question we need a what, who, where, when or how. Your question needs a who for an answer.
No, the gerund 'paintings' is a common noun, a general word for any paintings of any kind.A proper noun is the name or title of a specific person, place, or thing. A proper noun for the common noun 'paintings' is the name of the paintings; for example:"Mona Lisa" painted by Leonardo da Vinci"Spring Morning in the Han Palace" painted by Qiu Ying"American Gothic" painted by Grant Wood
A Bail
A painting of the Virgin Mary is frequently called a Madonna, especially if she is pictured holding the child Jesus.
1000 paintings
The thing that is a sash like object that holds a katana is called an obi.
a clamp
The thing that holds dead man ashes is called an Urn I believe :)
A bobbin or a Spool
Filament.
A sheath.
Tomb or sarcophagus
an easel
sunglasses holder?
The "necklace" piece is called a Lanyard. Then the other piece that holds the card is called an ID Protector.
Always called it a tree stand.
Hopper or Loader