The same root, across a whole language family
These are attested shared morphemes — not coincidences of spelling. Where we are not confident a root is shared, we say nothing and simply list the names.
anthos
flower (Greek)
Greek
Anthi, Anthimia, Anthoula, Anthousa, Calantha, Calanthe, Chrysanthi, Chrysanthia
flor-
flower (Latin)
Latin, Spanish, Italian, French
Blanchefleur, Fleur, Fleurette, Fleurine, Flor, Flora, Florabelle, Florence
pushpa
flower (Sanskrit)
Sanskrit, Hindi
Pushpa, Pushpalata, Pushpamala, Pushpanjali, Pushpita
Every tradition, side by side
Greek 35
Other 34
Sanskrit 27
English 20
Japanese 18
Latin 18
Persian 18
Italian 14
Tamil 13
French 12
Mongolian 4
Tatar 4
Slavic 4
Nahuatl 3
Welsh 2
Ukrainian 2
Filipino 2
Ethiopian 1
Cherokee 1
Indigenous American 1
Taíno 1
Russian 1
Pashto 1
Celtic 1
Yiddish 1
Tuvan 1
Igbo 1
Berber 1
Scandinavian 1
Icelandic 1
Romansh 1
Korean 1
Nogai 1
Azerbaijani 1
Uzbek 1
Kyrgyz 1
Tongan 1
Oromo 1
Polish 1
Tigrinya 1
Basque 1
Maori 1
Yakut 1
Hmong 1
Sotho 1
Shona 1
Kalmyk 1
Kurdish 1
Sinhala 1
Hopi 1
Telugu 1
Lithuanian 1
Samoan 1
Quechua 1
Dagestani 1
African 1
American 1
Chechen 1