Abreast and Next

Abreast adjective - Having information especially as a result of study or experience.

Next and abreast are semantically related. In some cases you can use "Next" instead the word "Abreast" as an adverb or an adjective.

Next adjective - Being the one that comes immediately after another.

Abreast and next are semantically related. Sometimes you can use "Abreast" instead an adjective "Next".