hydra

As a proper noun hydra

is .

As an adjective hydronic is

refers to heating systems which involve circulating hot water or steam.

As proper nouns the difference between snake and hydra

is that snake is (video games) an early computer game, later popular on mobile phones, in which the player attempts to manoeuvre a perpetually growing snake so as to collect food items and avoid colliding with walls or the snake's tail while hydra is .

As a letter s

is the letter s with a.

As a proper noun hydra is

.

As a proper noun hydra

is .

As an adjective undefined is

lacking a definition or value.

As a proper noun hydra

is .

As a noun anemone is

(label).

As proper nouns the difference between hydra and amoeba

is that hydra is while amoeba is .

As a proper noun hydra

is .

As a noun wyrm is

(poetic) dragon, particularly one without legs or wings.

As proper nouns the difference between kraken and hydra

is that kraken is a colossal sea monster that attacks ships and sailors, often portrayed as a giant octopus or squid while Hydra is a mythological serpent with seven heads, slain by Hercules as one of his twelve labours. Also called the Lernaean Hydra.

As a noun hydra is

any of several small freshwater polyps of the genus Hydra and related genera, having a naked cylindrical body and an oral opening surrounded by tentacles.