Do you take a break between words, when pronouncing?

The short answer is "not usually."

Text segmentation--for example, the boundaries between words in print--is a different phenomenon from speech segmentation. Anyone listening to someone speaking a foreign language will be hard-pressed to determine where one word ends and the next begins. Semantic context, grammar, and other contexts are required to know where one word ends and the next begins.

Boundaries in print are a different issue. Different languages use different kinds of orthography, and handle segmental boundaries differently.

In different language there are different contexts where people pause, (e.g. in English people do often pause between clauses or phrases, and between sentences). But generally, airflow continues without discrete pauses between words. There are even ways that adjacent words change each other's pronunciation slightly (e.g. saying the n sound in "in case" more like an -ng sound).