In many photo organizing software, such as Adobe Lightroom, there are two options when organizing your photos - move to album and copy to album.
Move to album is a feature used to move the selected photos to a new album or an existing album. When you move a photo to an album, it completely removes it from its current location and adds it to the target album. This means that if the photo is currently located in another album or collection, it will be removed from that location and moved to the new album. The photo will no longer be displayed in its original location.
Copy to album is a feature used to create a duplicate of the selected photos in a new album or an existing album. When you copy a photo to an album, it creates a copy of the photo in the destination album, while keeping the original photo in its current location. This means that the photo will be displayed in two separate locations - the original location and the new album.
In summary, move to album completely removes the photo from its original location and adds it to the target album, while copy to album creates a duplicate of the photo in the target album, keeping the original photo in its original location.