It surprises me the word 'biped' being there. What's the reason behind men knowing this word way more than woman? I fail to find a stereotype answer for this (unlinke kevlar or taffeta)...
"Biped" is only found in the context of science (evolutionary biology) or technology (robotics).
It'd be interesting to have this broken down by age. While biology and medicine have historically been mostly men, in many places they're about 50-50 in the last couple of decades.
It's not a word people use in normal conversation, only really science or philosophy (Plato's "featherless biped"). Which are stereotypically masculine pursuits, I guess?
More men might be familiar with bipods (e.g., affixed to a rifle), or monopods and tripods (from the male-dominated photography hobby), or even gastropods or pedals...
The one I was puzzled by was golem.
I'd bet good money it's not knowledge of the Jewish religion but RPG/videogames at the origin of the awareness of this word among most males...
I second that. The first thing that comes to my mind when I hear the word golem is the pokémon...
Also, could be a lot of males familiar with the LOTR series, and mistaking golem for the character gollum. Easy mistake to make if you didn't read the books.
It makes me wonder if words like "bugbear", "kobold", "hobgoblin", "duergar", or "svirfneblin" were even tested.