Whimbrel or Curlew

Good afternoon All

I visited Conwy on Sunday and took a picture of what i though was a Curlew but i have just been informed that it is actually a Whimbrel.

Now i have been bird watching for a matter of 2 weeks and have had a look at my App on my I Phone and i cannot tell much of a difference.

Could someone enlighten me with the breed as this is a matter of another species or not :-)