Definition of always :
1. At all times; ever; perpetually; throughout all time; continually; as, God is always the same.
2. Constancy during a certain period, or regularly at stated intervals; invariably; uniformly; - opposed to sometimes or occasionally.
continuously (part of speech: adverb)
indefatigably, coherently, lastingly, evenly, everlastingly, unendingly, sequentially, recurrently, uniformly, ceaselessly, unvaryingly, consistently, endlessly, undyingly, continually, uninterruptedly, continuously, monotonously, straightly, consecutively, perennially, constantly, repetitively, flatly, unremittingly, incessantly, interminably, habitually, unceasingly, homogeneously, regularly, cyclically, perpetually, steadily, persistently, invariably
while (part of speech: adverb)
perpetually (part of speech: adverb)