TKD is primarily Kicks & the art orhinates from Kores otherwise known as korean Kickboxing.
Karate of both strong core punches & Kicks Known as the art of empty handy (no weapons) orginates from Japan.
Both arts a trained to fight at medium to long distance, but do not teach much in grappleing or close distance (clinching).
No there not very alike in my opinion because they originate from different countries, it like saying America is alot like Mexico.