Advice
Advice, guidance, exhortation, advocacy, proposal, rider, counsel, direction, enjoinder, suggestion, and submission.
Endorsement
Commendation, good word, special mention, suggestion, praise, plug, endorsement, favourable mention, testimonial, tip, and words of approval/approbation.
Example Sentences of Recommendation
The recommendation was highly appreciated by management.
I received a glowing recommendation today.
He wrote a strong recommendation letter.
Her recommendation helped me immensely.