Echidna
Part of speech: noun
Definition: Any of the four species of small spined monotremes, also known as a spiny anteaters, found in Australia and southern New Guinea.
Hedgehog
Part of speech: noun
Definition: Small mammal characterized by its spiny back and by its habit of rolling itself into a ball when attacked.A type of moveable military barricade made from crossed logs or steel bars, laced with barbed wire, used to damage or impede tanks and vehicles; Czech hedgehog.The nickname for a type of depth charge weapon that simultaneously fires a number of explosives into the water to create a pattern of underwater explosions intended to attack submerged enemies.A type of chocolate cake (or slice), somewhat similar to an American brownie.
Example sentence: When I was super young, I had an Atari and used to play 'Space Invaders.' Then I fell in love with 'Mario Bros.,' 'Sonic the Hedgehog' and 'Yoshi' on Super Nintendo. I was quite a bit of a gamer as a kid when I think about it.