This is the 9467th most frequent Japanese word.
竹山
"竹山" (Takeyama) means "bamboo mountain."
In this sentence, '竹山' refers to a bamboo-covered mountain, emphasizing its characteristic as part of nature.
竹山は日本の美しい自然の一部です。
Takeyama is a beautiful part of Japan's nature.
Here, '竹山' is used as a surname to address a person, showing its common use in Japanese names.
竹山さんは今日の会議に出席します。
Mr. Takeyama will attend today's meeting.
'竹山' in this context specifies a location, taken as a proper noun or the name of a place, making it a known landmark.