moler1
/ˈməʊlə/Now rare
noun
A person employed to catch and kill moles; a mole-catcher.
Origin
Late 19th century; earliest use found in Robert Cole (1831–1921). From mole + -er.
moler2
/ˈməʊlə/(also molar)
noun
A kind of diatomaceous earth found in Denmark and used elsewhere as a building material for its lightness and heat resistance.
Origin
Early 20th century; earliest use found in Chemical Abstracts. From Danish moler) from Danish regional (northern) mo loose chalky soil + Danish ler loam, clay.