California white fir and Silver fir

California white fir noun - Medium to tall fir of central to western United States having a narrow erect crown and soft wood.

Silver fir and California white fir are semantically related. In some cases you can use "Silver fir" instead a noun phrase "California white fir".

Silver fir noun - Any of various true firs having leaves white or silvery white beneath.

California white fir and silver fir are semantically related. Sometimes you can replace phrase "California white fir" with "Silver fir", this phrases are similar.