図鑑 and 事典: identification and reference-book use
Compare identifying an insect and seaside-plant photographs with a flower-name lookup and a borrowed animal encyclopedia. Read the actual targets and information without exclusive content rules.
Identification through guides and reference books
図鑑 (ずかん) means an illustrated or field guide, while 事典 (じてん) means an encyclopedia or reference dictionary. The insect and flower examples show reference works being used in identification.
Photographs are explicitly included in the seaside-plant guide example. Compare the information consulted or the book borrowed without making photographs, animals, or plants exclusive to either reference-book name.
An insect name and stated plant photographs
「兄は図鑑を開き、庭で見た虫の名前を調べた。」 — “My brother opened a field guide to identify the insect he saw in the yard.” The brother opened the guide to identify the insect seen in the yard. The reported use connects opening the guide with the particular insect.
「この図鑑には海辺の植物が写真付きで載っている。」 — “This illustrated guide includes photographs of seaside plants.” 写真付きで identifies photographs accompanying the seaside plants in this guide. That stated content does not establish a photograph format for every 図鑑.
A flower lookup and an animal-book loan
「植物事典で庭の花の名前を調べた。」 — “I looked up the name of the garden flower in a plant encyclopedia.” A plant encyclopedia is also used to look up a flower's name. The insect and flower are the particular targets, rather than an animal-only versus plant-only rule for the two words.
「図書館から動物の事典を借りてきた。」 — “I borrowed an animal encyclopedia from the library.” The action is borrowing an animal encyclopedia. What was subsequently checked in it, or whether its whole contents were read, is separate from that borrowing action.
What targets or information are involved in the seaside-plant 図鑑 photographs and the flower-name lookup in 事典?
Show the answer and why
The guide example states that seaside plants appear with photographs. The encyclopedia example reports looking up a garden flower's name. Their reference roles can overlap, without making photographs or plants exclusive to one word.