firs / furs / furze {firry / furry}
firs – n. p. of fir – 1. any of various evergreen trees of the genus Abies having single flattened needles and erect cones with deciduous scales; 2. any of several similar or related trees such as Douglas fir; 3. the wood of these trees
furs – n. pl. of fur – 1. the thick coat of soft hair covering a mammal’s skin; 2. the hair covered dressed pelt of such a mammal; 3. a garment made from this; v. tr. – 1. to cover, line or trim with fur; 2. to provide fur garments
furze – n. – any of several spiny shrubs of the genus Ulex, especially U. europaeus, native to Europe and having fragrant yellow flowers and black pods