Parasite
Part of speech: noun
Definition: A (generally undesirable) living organism that exists by stealing the resources produced/collected by another living organism. A person who relies on other people's efforts and gives little back (originally a sycophant).
Example sentence: I don't want a little Oliver/Olivia parasite running about eating my biscuits. My friends, on the other hand, are procreating like humanity depends on it, and it doesn't.
Sponge
Part of speech: verb
Definition: To take advantage of the kindness of others.To clean, soak up, or dab with a sponge.
Part of speech: noun
Definition: Any of various marine invertebrates, mostly of the phylum Porifera, that have a porous skeleton often of silica.A piece of porous material used for washing (originally made from the invertebrates, now often made of plastic).A porous material such as sponges consist of.A heavy drinker.A type of light cake; sponge cake.A type of steamed pudding.A person who takes advantage of the generosity of others (abstractly imagined to absorb or soak up the money or efforts of others like a sponge).A form of contraception that is inserted vaginally; a contraceptive sponge.
Example sentence: I think people have to sharpen their eyes and look. I always feel like a big sponge: I feel like I learn lots of things by osmosis, and I feel that I'm always absorbing. I mean, when people say, 'What is your inspiration?' I could throw up. I mean, I'm inspired by the fact I get up in the morning. And I'm still here.