I have these two data frames:
df1
|year |month | mort_rate 
 -----------------------  
 2019  April   .18
 2019  My      .30
  .     .        .
  .     .        .
df2
|year |month | mort_rate 
 -----------------------  
 2020  April   .18
 2020  My      .30
  .     .        .
  .     .        .
I would like to have a data frame like this
df3
|year |month | mort_rate | year |   month | mort_rate 
 ----------------------------------------------------- 
 2019  April   .18         2020     April
 2019  My      .30          2020    May
  .     .        .
  .     .        .
I tried with this:
df3 <- cbind(df1, df2)
And I have this result:
Error in data.frame(..., check.names = FALSE) : 
  arguments imply differing number of rows: 9, 8
I know that the shape of my data frame is different but i would like to know if is possiple append two different data frames in a horizontally way.
Thanks