even if
• despite the possibility that; no matter whether.
• "always try everything even if it turns out to be a dud"
even as
• at the very same time as.
• "even as he spoke their baggage was being unloaded"
Similar:
while,
whilst,
as,
at the (same) time that,
just as,
at the very time that,
at the very moment that,
exactly when,
during the time that,
