photobook

The story

1. Proto-Indo-European*bʰeh₂-
2. Proto-Indo-European*bʰéh₂os
3. Proto-Hellenic*pʰáwos
4. Ancient Greekφᾰ́ος (phắos)
5. Ancient Greekφῶς (phôs)
6. Ancient Greekφωτο- (phōto-)
7. Englishphoto-
8. Proto-Indo-European*gerbʰ-
9. Proto-Hellenic*grə́pʰō
10. Ancient Greekγράφω (gráphō)
11. Englishphotographclip.
12. Englishphoto
13. Proto-Indo-European*bʰeh₂ǵosder.?
14. Proto-Indo-European*bʰeh₂g-der.?
15. Proto-Germanic*bōks
16. Proto-West Germanic*bōk
17. Old Englishbōc
18. Middle Englishbok
19. Englishbook
20. English todayphotobook

From photo + book.