bedrock

English Thesaurus

1. principles from which other truths can be derived (noun.cognition)

hypernym	:	principle,
definition	:	a basic truth or law or assumption (noun.cognition)

hyponym	:	abc, abc's, abcs, alphabet, first principle, first rudiment, rudiment,
definition	:	the elementary stages of any subject (usually plural) (noun.cognition)

2. solid unweathered rock lying beneath surface deposits of soil (noun.object)

hypernym	:	rock, stone,
definition	:	a lump or mass of hard consolidated mineral matter (noun.object)