"Её любимое оружие — копьё."

Translation: Her favorite weapon is the spear.

[supermollusc]

Don't mess with the Duo gals seems to be the message here...

[john.newbe]

Vera goes ape......

[ArielBisso]

I love the History skill.

[Alf42]

Mine too! lol ..jk.

[Alexey387055]

But why is "the spear" here? And is not "a spear"?

[Dimitrie_Grinwis]

When you are talking about the kind of weapon one likes best to use, it is 'the spear'. When you are talking about what weapon in a collection of different weapons one likes best, e.g., estheticaly, it would be 'a spear'.

[donkey-luke]

I didn't know that Duo knows my wife...

[Draco_Daniel]

I never knew Vera was a gladiator.

[DistilledVinegar]

Oh, hi Undyne.

[SashaTB]

I was looking for someone who would mention her, and I suceeded. Thank you.

[LeonardoMay5]

Her favourite weapon is a pear.

[LanaMack2]

My favourite weapon is the debate

[zlorenzx]

might be more useful than a sword. but not as stylish

[deactivated user]

Spears compare to swords like rifles compare to pistols. One on one the former is always going to beat the latter, but smaller weapons still have their niches.

[Pavel_J]

Is "Her favorite weapon is spear" wrong?

[BenCostell3]

Yes, in English "spear" is countable, so using it without an article in this sentence is incorrect.

[steven221162]

What is the difference between a lance and a spear? one is "correct, the other is not

[Shady_arc]

We accept spear/lance/javelin interchangeably.