The only free and comprehensive online etymological dictionary of the Spanish language
carne m. (Noun) "meat," "flesh"
11th cent. From Latin carnem 'id.,' accusative of caro 'id.' From Proto-Italic *kerō(n) "part," "piece of flesh," "meat." From Proto-Indo-European *(s)kerH-n- "piece." The semantic development in Proto-Italic was "piece" > "piece of meat."
Also the origin behind the surnames Carne, Carnes.
Indo-European
Romance
Asturian carne, Portuguese carne, Galician carne, Catalan carn, French chair, Italian carne, Aromanian carni, Romanian carne, Sardinian carre
Italic
Oscan carneis "of the part," Umbrian karu "piece of meat," kartu "set aside"
Celtic
Old Irish scaraid "to separate," Middle Welsh yscar 'id.'
Balto-Slavic
Lithuanian skìrti "to distinguish"
carona f. (Noun) location on a horse's back used for a saddle; "saddle blanket"
16th cent. Of unknown origin. Possibly from a loan from another Indo-European language, built off of one of their word for "flesh" (see list of cognates under carne).
carrera f. (Noun) "career;" "racetrack"
10th cent. From Late Latin carraria "road for wagons or carts." From Latin carrus (see carro).
Indo-European
Romance
Asturian carrera, Portuguese carreira, Galician carreira, Catalan carrera, French carrière, Italian carriera, Romanian cărare
carreta f. (Noun) wagon
Very early 13th cent. Borrowed from either Catalan or Occitan carreta 'id.,' deriving from carro "cart." From Latin carrus "wagon" (whence Spanish carro).
carretera f. (Noun) highway, (Salamanca) "shed for farm equipment and machinery"
13th cent. From carreta and -era, a suffix indicating a place where an act can be carried out.
Also the origin of the surnames Carretero and Carreteros, given to wagonmakers.
carril m. (Noun) "rut;" "rail"
Very early 15th cent. From Vulgar Latin *carrilis (adj.) "wagon," "carriage." From Latin carrus "wagon" (see carro).
Also the origin behind Cariles, the name of three towns in Asturias.
Indo-European
Romance
Asturian carril, Portuguese carril, Galician carril, Catalan carril
carro m. (Noun) "car;" "cart"
13th cent. From Latin carrus "cart," from Gaulish karros "wagon." From Proto-Celtic *karro- 'id.' From Proto-Indo-European *kr̥-so- "run." From the root *kers- "to run."
Indo-European
Romance
Asturian carru, Portuguese carro, Galician carro, Catalan carro, French car, Italian carro, Aromanian car, Romanian car
Celtic
Gaulish Καρρόδουνον (karródounon) "wagontown," Old Irish carr, Middle Welsh carr, Old Breton carr, Cornish car
Germanic
Faroese hurra "to take off," Norwegian hurre "to turn," Middle High German hurren "to dash," English to hurry
carta f. (Noun) "letter;" "card;" "menu"
12th cent. From Late Latin carta, from Latin charta "papyrus leaf," from Greek χάρτης (khártes) 'id.' Of unknown origin. It is assumed the origin must be from Egypt, given the location of papyrus manufacturing in antiquity.
Also the origin of the surnames Carta, Cartas and Lacarta.
Indo-European
Romance
Asturian carta, Portuguese carta, Galician carta, Catalan carta, French charte, Italian carta, Aromanian carte, Romanian carte
Indo-Iranian
Sanskrit kaḍitra-? "writing leather"
"It is not known when Cyperus papyrus was first used in the manufacture of paper, but the earliest known example is a blank scroll that was found in a First Dynasty tomb dating to around 3100 B.C.E.... The Greeks were writing on papyrus paper by the sixth century B.C.E. and during their tenure as Egypt's rulers and colonizers paper became a valuable commodity of export to the Mediterranean world and continued so through Roman times." ~ D. P. Ryan, "Papyrus" (1988)
cartera f. (Noun) "wallet;" "briefcase;" "purse"
17th cent. From carta.
cartería f. (Noun) "mail carrying"
From cartero.