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https://www.bls.gov/opub/btn/archive/differences-between-the-consumer-price-index-and-the-personal-consumption-expenditures-price-index.pdf for a description of the difference between CPI and PCE. There may be additional definitions we can get from this document either about PCE or related to inflation calculations.
There is a context sensitive glossary published by the census bureau that may be useful. The American Housing Survey is the main source for information on housing starts, etc. See https://www.census.gov/programs-surveys/ahs.html.