1 lonely

2 solitary

1 classifier for houses or buildings

2 ridgepole (old)

1 alone

2 independent

3 single

4 sole

5 only

1 exclusive

1 unique

2 distinct

3 having special characteristics

1 lit. only one branch of the tree is thriving (idiom)

2 fig. to be in a league of one's own

3 outstanding

1 lit. you hit the high road, I'll cross the log bridge (idiom)

2 fig. you go your way, I'll go mine

3 you do it your way, I'll do it mine

1 original and ingenious (idiom)

2 to show great creativity

1 to fight alone (idiom)

1 one strand does not make a thread, one tree does not make a forest (idiom)