adjective
1
BAD : In Finland it's usual that women go out to work.
GOOD : In Finland it's usual for women to go out to work.
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it's usual/unusual ( for sb ) to do sth (NOT that ): 'Is it usual for him to be so late?' 'It's very unusual to see these flowers at this time of the year.'
2
BAD : I thought it was just a usual parcel but then it began to move across the table.
GOOD : I thought it was just an ordinary parcel but then it began to move across the table.
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usual = that is usually used, seen, done etc: 'She was sitting in her usual chair by the fire.' 'We arranged to meet at the usual time.' 'He was speaking in his usual calm tone.'
ordinary = without any special features or qualities: 'It was just an ordinary house in an ordinary street.' 'From the moment I met her, I knew she was no ordinary kind of girl.'