work vs operation

Some examples from the web:

• Work, work, work, work, work, work, work, work.
• Field work is an important component of geology, although many subdisciplines incorporate laboratory work.
• Original work: a work not based upon another work.
• After theatre work in Manhattan, he moved into product and decorative design work.
• Greatly improve the work efficiency when busy with work. Printing with high speed.
• Team work to help the dream work.
• Leesman conducts global studies into how work environments support users in their work.
• The work programme or work plan may contain specific obligations regarding exploitation and dissemination.
• To guide its work, multiannual work programmes should be developed in consultation with Member States.
• other work directly connected with farm work:
• Domestic work is the largest sector of undeclared work in Europe.
• Specialist work is different from field work, believe me.
• Technique: Acrylic with frame with graphic work composing the work.
• She does also do other work, especially collage work.
• Other techniques are palette work and table work.
• Cathy Bokor, vice-president of Accurapid, stresses team work, another cardinal point for work in agencies.
• A regular work contract should be prepared for any short-term and seasonal work.
• I work work for the Patriarchs and Bishops of our area.
• This required some work to make the system work perfectly.
• Professor Parkes says work, work, work.

Some examples from the web:

• These men prevented a dangerous international operation.
• The operation has only been performed once before.
• To avoid hindering the operation of international trade.
• There is scarcely any scrutiny of their activities or operation.
• The method of operation baffles investigators.
• It makes any serious operation impossible.
• The operation to capture Jack Bauer was unsuccessful.
• Giving you Collette jeopardizes my operation.
• We're mounting our rescue operation.
• All teams, abort the operation.
• The rescue operation that I authorized was successful.
• Our undercover operation just went south.
• This operation's patient doesn't officially exist.
• Your boys just took over another Wolverine operation.
• Which necessitated taking out the entire operation.
• Your husband was killed during an undercover operation.
• In order to estimate working time/type of operation.
• However, requesting such certificate must not delay the rescue operation.
• This is a non-violent, rescue operation.
• Three killed, 96 injured in that operation.