What's the difference between pencel and pennon?

Pencel

Definition:

• (n.) A small, narrow flag or streamer borne at the top of a lance; -- called also pennoncel.

Example Sentences:

Pennon

Definition:

• (n.) A wing; a pinion.
• (n.) A pennant; a flag or streamer.

Example Sentences:

• (1) Pennon says it uses the UK government’s carbon shadow pricing to monetise carbon emissions over the whole life of proposed projects.
• (2) South West Water, part of the Pennon Group, has also promised to keep bills below inflation.
• (3) The City speculates that Severn Trent, United Utilities and Pennon will come into somebody else's sights soon.
• (4) While Microsoft prices it at $6-$7 a tonne of carbon, UK utilities company Pennon Group gives a spread of $84.24- $324.00.