There are two symbols for what I have seen. The most common one is 木 ("ki"). The second one has the same exact prounounciation: 樹 ("ki"), but is rarely used as an individual character. In most cases it's attached to another symbol like 大樹 ("tai-ju", big tree), for example.
tree looks like this in kanji: 木 pronounced ki.
The generic word for tree is 'ki.'
木 (ki) is the word for tree.
木 (ki) is Japanese for tree. A less common word using same kanji would be 木本 (mo ku hon) meaning tree.
There is no Japanese word for "Alicia," but it can be written: アリシア
The Japanese word for "bone" is 'hone,' written in Japanese as: 骨
ドングリ (donguri) is the Japanese word for "acorn".
Ryan can be written in Japanese as: ライアン
The word "hallelujah" written in Japanese katakana would be: ハレルヤ.
Karaoke is a Japanese word. It is written as カラオケ.
The Japanese word for price is 'nedan,' written: 値段
The word for the season "Spring" is 'haru' in Japanese, written: 春