1 difference

2 discrepancy

1 different

2 other

3 hetero-

4 unusual

5 strange

6 surprising

7 to distinguish

8 to separate

9 to discriminate

1 different place

2 abroad

1 exceptional

2 abnormal

3 an anomaly

1 the opposite sex

2 of the opposite sex

3 heterosexual

4 different in nature

1 lit. to share the same bed with different dreams (idiom); ostensible partners with different agendas

2 strange bedfellows

3 marital dissension

1 varying from person to person (idiom); different for each individual

1 rare treasure (idiom)

1 exotic flowers and rare herbs (idiom)

1 very rarely seen, unusual (idiom)