Cow and Llama

Cow noun - Female of domestic cattle: "`moo-cow' is a child's term".

Llama and cow are semantically related In some cases you can use "Llama" instead a noun "Cow".

Llama noun - Wild or domesticated South American cud-chewing animal related to camels but smaller and lacking a hump.

Cow and llama are semantically related in hoofed animal topic. You can use "Cow" instead a noun "Llama".