Spear
The kanji and the word are exactly the same. That means they share meanings as well.
ほこ
The person who's holding the spear is a little hoe 子. It's a child who learned to fight with a hoe, and he's turned the hoe into a spear to fight with. Imagine him swinging his hoe spear around like a little dork.
この美しい矛は、白金とプラチナで作られています。
This beautiful spear is made from white gold and platinum.