1 secondary

2 auxiliary

3 deputy

4 assistant

5 vice-

6 abbr. for 副詞|副词 adverb

7 classifier for pairs, sets of things & facial expressions

1 deputy director

2 assistant head

1 vice-chairperson

1 side effect

1 deputy mayor

1 to bill and coo (idiom)

2 to whisper sweet nothings to one another

3 to be very much in love

1 the name does not reflect the reality (idiom); more in name than in fact

2 Reality does not live up to the name.

3 Excellent theory, but the practice does not bear it out.

1 not just in name only, but also in reality (idiom)