Egg, Facehugger, Chestburster aren't terribly scientific though.
Don't get me started on how "Xenomorph" can apply to a variety of creatures, contextually within Aliens & A3 it works because it's referred to as "A Xenomorph" which would be correct. But the miscommunication that it's
"The Xenomorph" from then onwards is irritating to say the least.
Give me half an hour or there abouts and I could make more suitable threatening names with the Latin dictionary.