Where does “hardcover” come from?

I need to flag a significant issue with this chain: it appears corrupted or incorrectly assembled. The etymological path shown doesn't connect logically to "hardcover." The chain lists: English hard → Middle English coveren → Old French covrir → Proto-Germanic harduz → Proto-Indo-European kert- → Latin con-/com This path conflates two different words (hard and cover) and includes Latin forms that don't fit a standard etymology. Proto-Germanic "harduz" (hard) and Old French "covrir" (cover) are separate etymologies that wouldn't chain together this way. **I cannot write an accurate one-sentence summary from this chain because the chain itself appears malformed.** To proceed, I would need either: 1. A corrected chain showing the actual etymological path for "hardcover," or 2. Clarification on which component word (hard, cover, or hardcover as

hardcover (English): A book with a rigid binding, often of cardboard...

Definitions

  1. A book with a rigid binding, often of cardboard...

Ancestry of “hardcover”, step by step

hardcover traces back through two separate lines of ancestry.

via English cover

StepLanguageWordMeaning
1EnglishcoverA lid; Area or situation which screens a person...
2Middle Englishcoverento recover
3Old Frenchcovrirto cover
4Latincooperiōto cover wholly or over, overwhelm, clothe
5Latincōn-Used in compounds to indicate a being or bringing together of several objects
6Latincumwith, along with; at; -fold
7Old LatincomAlternative form of cum
8Proto-Italickomwith, along, at
9Proto-Indo-Europeanḱómbeside, near, by, with
10Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
11Middle Englishkyt
12Germankittputty certain kinds of cement used for fixing e.g. window panes
13Old High Germankuti
14Proto-West Germanickwidugum, resin
15Proto-Germanickweduzresin
16Proto-Indo-Europeangʷet-resin, gum; to say, speak
17Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via English hard

StepLanguageWordMeaning
1EnglishhardHaving a severe property; presenting difficulty;...
2Old Frenchhardihardy; tough; durable
3Old Frenchhardirto harden
4Frankishhardijanto harden, to make hard
5Proto-Germanichardijanąto make hard, strong; to harden
6Proto-Germanicharduzhard; brave
7Proto-Indo-Europeankert-times; to weave, twist together; time
8Proto-Turkic*keŕ-to travel, tour

Words derived from “hardcover

Every word from Proto-Indo-European gū-Every word from Latin cōn-Every word from Proto-Indo-European gʷet-
hardcover — Etymology, Origin & Word History | Etymology Explorer