we'd / weed are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
we'd: NA
weed: (noun) any plant that crowds out cultivated plants. (noun) a black band worn by a man (on the arm or hat) as a sign of mourning. (verb) clear of weeds.
we'd: w·IY·d
weed: w·IY·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)