noun
composition of an artwork; pictorial design
Refers to the overall arrangement, layout, or structural design of a picture or illustration.
この絵本は絵組がとても美しい。
The pictorial design of this picture book is very beautiful.
画家は絵組を練るのに時間をかけた。
The painter spent time refining the composition of the artwork.
noun
illustrations inserted in a book
Specifically refers to pictures or illustrations placed within a book, often as part of the layout.
小説に絵組が何点か挿入されている。
Several illustrations are inserted in the novel.
構図 is a more common term for composition in visual arts, while 絵組 is a less frequent synonym specifically for pictorial arrangement.
挿絵 is the standard word for illustrations in a book; 絵組 in this sense is rarer and may emphasize the placement or set of pictures.
Compound of 絵 (e, 'picture') and 組 (kumi, 'arrangement, set'). The reading えぐみ is a rendaku form of くみ.