Spike

Getreideähre

(ear of grain — see also ear)

Nadel

(sharp peak in a graph)

Nagel

(very large nail)

Schmetterball

(volleyball)

Spitze

(very large nail)

Spitze

(anything resembling such a nail in shape)

Spitze

(sharp peak in a graph)

Stachel

(anything resembling such a nail in shape)

Ähre

(ear of grain — see also ear)

Ähre

(botany: kind of inflorescence)

in die Höhe schießen

(to increase sharply)