WordNet sense 1 (medium to tall fir of central to western United States having a narrow erect crown and soft wood):

Abies concolor, Abies lowiana, California white fir, Colorado fir

WordNet sense 2 (medium to tall fir of western North America having a conic crown and branches in tiers; leaves smell of orange when crushed):

amabilis fir, Christmas tree, Abies amabilis, Pacific silver fir, red silver fir