How to differentiate Engine vs anchor

Engine: can drive the organisation in certain way ,lead the organisation and takes to the destination.always very committed towards the work.

Activities as follows: 

• they are very positive for all the actions
• they are motivate others to achieve.
• they contribute their part without any delays.
• they support in all the phases.

Anchor: can stop all the activities and always complain.

Activities as follows:

• Always demotivates 
• Negative in thinking.
• do others let down.
• criticizes a lot.
• hurdle others.

Consider the above and move ,any more suggestions feel free to comment.