transitive verb, godan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means include so the verb vocab version is to include or to contain.
While 含む can be used in everyday conversation, it’s a relatively formal word that is generally used in explanatory sentences.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
They don't want to include you in their game? Well, "F*** (ふく) you!" you yell at them, because they wouldn't include you.
What kinds of benefits does a hot spring containing alkali have?