Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Russian простой
Old East Slavic простъ (inherited)
Russian проста́к (link)
Russian простота́ (link)
Russian упроща́ть (link)
Russian упроще́ние (link)
Russian проста́ивать (mention)
Russian проста́ивать (link)
Russian переры́в (link)
Proto-Slavic *prostъ (inherited)

Czech prostý (cognate)
Russian простыня (affix)
Russian простенький (affix)
Russian спроста (affix)