ichidan verb, transitive verb
spread; propagate; popularize; disseminate
Transitive: to make information, ideas, practices, culture, or influence spread widely. The thing being spread is marked with を, and the area or audience often takes に or へ.
彼女は日本文化を海外に広めたいと思っている。
She wants to spread Japanese culture overseas.
It will take time to spread this activity nationwide.
ichidan verb, transitive verb
broaden; extend; widen; enlarge
Used especially for broadening an abstract range such as knowledge, experience, perspective, or interests. For physically making something wider, 広げる is often the more ordinary choice, but this sense covers the idea of making something broader or larger.
若いうちに旅をして見聞を広めるといい。
It is good to travel while you are young and broaden your experience.
読書は子どもの興味を広めるきっかけになる。
Reading can be a chance to broaden a child's interests.