こんにちは。 I will answer your question. 「友達 ともだち Tomodachi」means "Friend". 「友　とも　Tomo」＝「共　とも　Tomo」 It's means 1.The partner who always crosses familiarly.=Friend *Usually, this "友　とも　Tomo" is used often in written language, but "友達　ともだち　Tomodachi" is used in talking. 2.The person who shares will and a purpose./tovarich. 3.What someone likes and likes usually. By dictionary.