With or without S?

English for Today by Ganiu Abisoye Bamgbose (Dr GAB)

With or without S?

Reading will broaden your ~horizon~ (nonstandard).
Reading will broaden your horizons (standard). To increase the range of one’s knowledge, understanding, or experience is to broaden one’s horizons.

When you see her, please put in good ~words~ for me (nonstandard).
When you see her, please put in a good word for me (standard). To make a supportive remark or favourable recommendation is to put in a good word.
GAB