You can just install kontact. This will bring both of those packages. Because kontact recommends those and default apt settings for Ubuntu is treating recommended applications as dependency
Here is the output of apt-cache depends kontact
→ apt-cache depends kontact
kontact
Depends: kdepim-runtime
Depends: libc6
Depends: libgcc1
Depends: libkf5completion5
Depends: libkf5configcore5
Depends: libkf5configgui5
Depends: libkf5configwidgets5
Depends: libkf5coreaddons5
Depends: libkf5i18n5
Depends: libkf5iconthemes5
Depends: libkf5identitymanagement5
Depends: libkf5kcmutils5
Depends: libkf5kdepimdbusinterfaces5
Depends: libkf5kiowidgets5
Depends: libkf5kontactinterface5
Depends: libkf5libkdepim5
Depends: libkf5parts5
Depends: libkf5service-bin
Depends: libkf5service5
Depends: libkf5webkit5
Depends: libkf5widgetsaddons5
Depends: libkf5windowsystem5
Depends: libkf5xmlgui5
Depends: libqt5core5a
Depends: libqt5dbus5
|Depends: libqt5gui5
Depends: libqt5gui5-gles
Depends: libqt5webkit5
Depends: libqt5widgets5
Depends: libstdc++6
Recommends: accountwizard
Recommends: akregator
Recommends: kaddressbook
Recommends: kmail
Recommends: knotes
Recommends: korganizer
Suggests: gnokii
So, install it with the command
sudo apt-get install kontact
Hope that helps.